I'm a bi woman from the U.S.

SEXISM----------

LGB Community: Where I live, basically everyone holds sexist views. Honestly, in my experience, the bi people I know do not tend to hold much less sexist views, but are at least more open to being challenged on them, versus hets who will get defensive and backpedal.

T Community: The whole thing's built on sexist stereotypes. What can I say?

I am gender-non-conforming and I think every woman should be, at least in terms of ritualistically humiliating feminine beauty rituals. It's a simple fact that overly feminine women are less respected, especially in the workplace. Others will think you are vain or want their musty attention and harass you. As far as men who do these rituals... I can't really relate, but it must feel good because they weren't "allowed" to do it growing up, usually. More power to em I guess, but women should not be wearing restricting/damaging clothing like heels in the workplace, and makeup is a time-waster and honestly does not make you look better. I feel sorry for gender-conforming women and men, but in different ways. For example, men who dress "conformingly" are being practical most of the time, and I support that, do the same, and encourage other women to do so as well. There is not much of "femininity" that's worth salvaging. Traditionally feminine hobbies like knitting shouldn't be shamed by men, but all of the "beauty" stuff can go right in the trash.

Gender roles in a same-sex relationship... well you can't have two people who exclusively work and do nothing around the house or vice versa. There is likely to be some difference in roles. If people want to have "traditional" gender-roles, that's okay up to a point. I have that in my relationship (I'm the one who works and does little around the house, partner stays home). I cringe at the thought of someone being completely dependent on their partner, the one who does not work should have a good chunk of money in a personal savings in case one partner gets a brain tumor or something and completely loses it.

RACISM----------

It is not racist to have racial preferences, but if those racial preferences are based in racist stereotypes ("I prefer Asians because they're submissive") or that sort of thing, that makes you a racist. However, finding certain races more attractive because you like their features is not racist. Is it racist to prefer people with big doe eyes? Then why would it be racist to prefer small eyes? Some people think certain features are beautiful, even when they're not traditionally considered to be.

I'm not really part of any community, but bi people don't tend to be more racist than others, in my experience.

I'm white and yes, a little. White people are actually technically the minority where I live, and some people really do not like us, but racism is rampant in general here. Honestly, the worst I get is dirty looks or mistrust, and it's not as bad as what my partner gets in the white areas (he is from the majority race here). I have never been denied service on the basis of my race, and any encounters I've had with cops have been quite friendly. I do live in the white area of town, so my experience has been quite mild. I know someone who grew up in a city near me and was literally the only white person at his school. He was extremely hated and suffered verbal and physical abuse and social ostracization on the basis of his race, and... it took its toll. He turned out extremely racist, as you can imagine. He has improved over the years, but I would still consider him very racist. There's no excuse to be racist, of course, but it's clear that if he was not treated that way by his peers, he wouldn't have turned out this way. Plenty of people become racist without any provocation from said race, but it's not always that way.

HOMOPHOBIA/BIPHOBIA----------

Honestly, I have not been in an "out" homosexual relationship, so I have not experienced much homophobia. When I came out to my sister, she basically said I was confused, disgusting, a liar, and would end up with a man some day, so there's some homophobia and biphobia.

"I don't like labels" and "sexuality is fluid" are extremely biphobic statements and any bi person who describes themselves this way has a lot of internalized biphobia. ESPECIALLY the "sexuality is fluid" people. The reason this statement is biphobic is because the premise pretends bisexuality doesn't exist. Ok... so I fall in love with a man, then later fall in love with a woman. You're telling me I literally changed sexualities? I'm not bi, I was straight and then became a lesbian! This is confusing and hurtful to bi people, who already perpetually doubt themselves, at least for the first few years. It contributes greatly to our erasure. It's also homophobic, and honestly heterophobic. If someone believes they are gay/lesbian for many years, then falls in love with someone of the opposite sex, they are fucking bi. Their sexuality did not change. They are bisexual. I hate queer theory.

On the topic of trans/homophobia... this one's hard. If a passing trans-identified male (suspend your disbelief) was in a relationship with a straight man, and the straight man takes off the trans-id male's pants to see a penis, and then subjects him to an attack, it's a homophobic attack. He was disgusted at the fact that this man tricked him into thinking he was a woman and "made" him do gay things. I'm not gonna say transphobia is impossible or doesn't exist, but the attacks they are subjected to will mostly be homophobic, especially since the attacks are perpetrated exclusively by straight/bi/gay(rarely) men, who are homophobic, and in some cases have internalized homophobia. This is also difficult because the term "transgender" is literally meaningless with the advent of self-id, so one would have to define it in the case of transsexuals. I suppose if some man didn't have a homophobic bone in his body but thought transsexuals were freaks because of the mutilating plastic surgeries and sought to attack them for that reason, that would be transphobia.

ADDITIONAL THOUGHTS----------

I'm glad you used the correct definitions of "racism" and "sexism", instead of the Critical Social Justice Theory versions. People who believe that ideology have an entire language made up where they can never be wrong.