There are a couple of logical fallacies towards your second link.

Character assassination based on an identity only tells you that there COULD be a lie/conspiracy. It doesn't mean there is one. It doesn't even necessarily mean the person you're discrediting is compromised.

Second fallacy is that compromised characters can still produce factual science. Bad actors developing bioweapons for nefarious purposes doesn't mean the bioweapon is fake. A lot of the tech around you is produced by bad actors.

You need to learn the science and actually disprove it.

In terms of your first link, some vaccines work, there are conspiracies behind some vaccines, there are human experiments behind some vaccines, there are side effects from some vaccines. Multiple things can be true at once. I'm not a complete anti-vaxx person, but there is a ton of manipulation and interference from our rulers and Big Pharma.