Hmm... well, I can tell you about ways that LGB people are oppressed. I'm not so sure what specifically "LGBTQ+ oppression" is referring to, because "LGBTQ+" label includes straight people and asexuals and people into kink and a bunch of other random not-oppressed groups.

Ways that LGB people are oppressed in the US...

Legal

• Supreme Court threat to overturn Obergefell ruling on same-sex marriage - although recently there's been some hope that same-sex marriage may be coded in law! The bill's in the Senate now, they just need 10 Republican senators to agree to it in order to overcome a filibuster. 5 have already agreed. (And Tammy Baldwin thinks that they're almost at that majority.)

• Legal to discriminate on the basis of same-sex attraction: housing, workplace - Last year there was some talk about the "Equality Act", but the bill hasn't been passed, it only passed the House. So in many states, it's still legal to discriminate against someone on the basis of same-sex attraction. Also, that bill sucked because it would've made "gender identity" a protected characteristic, which makes zero sense because gender identity cannot be objectively defined.

Social

• All major social media platforms have censored or even outright banned any discussion of LGB rights or pro-LGB views.

• Being public and open about one's pro-LGB beliefs may result in damage to your career or loss of employment, i.e. financial threat. In the US, see Katie Herzog-- a lesbian journalist who's been "cancelled" for pieces like this one. (In the UK, Allison Bailey is a good example.)

• A number of lesbian women have reported that they have been outright banned from using dating apps if they state that they have no interest in dating male-born people (i.e., men).

• There is a lot of pressure on LGB people to transition. I have felt this pressure myself. "You're just a man in a woman's body. We know better than you about who and what you are-- and we think you need to transition. We just want what's best for you." Gaslighting. At a societal level.

• As a result of ^ that, many LGB people end up with sexual dysfunction and physically harmed bodies. And lots of mental health problems. There are fewer of us as a result of suicide. Those factors complicate our romantic and sexual relationships with other same-sex attracted people.

If that's not oppression... I'd like to know what is.

I might add to this as I think of more.

edit:

I would also add that media representation of LGB people is pretty terrible. For lesbian women, representation almost always occurs in the context of fetishization; lesbian women are not treated as legitimate characters in their own right but as sexual objects or as stereotype-ridden caricatures of actual human beings. For bisexual women, I see the "crazy/insane/dangerous" stereotype used a lot. I ranted about the crappy depiction of lesbian/bisexual characters in the movie "Everything Everywhere All At Once" here-- contains spoilers. I don't know as much about the men's side of things, though.