I tried many times during the past year. SimpleLogin aliases with and without a custom domain, Mullvad and ProtonVPN, etc. No matter what I did I always ended up being shadow banned the moment I posted pretty much any comment. In the end I decided it just doesn't worth my time.
If you really have to, the only way that I think it would work reliably is buying an aged account that already has a bit of karma behind it for some XMR. Plenty people are selling them, but I am not gonna pay $30 for the privilege of using fucking Reddit.
and come join us here on lemmy. The community you're describing is the kind of use case that lemmy seems perfect for. If enough people from that community are willing to make the switch, it may even have a snowball effect such that the fediverse community over time becomes the place known for Turkish LGBTQ+ to congregate, free from all the bullshit (like lack of anonymity when it is most needed) that reddit imposes. I realize you can't just freely and openly advertise lemmy there and that it would be a slow process that will not help you with your immediate need of a sizeable community, but if you could just let a few people know here and there, some may be inclined to make a comm (or entire instance) free of the reddit shackles, and get that snowball starting to roll, especially as reddit continues to degrade.