I'm gonna recommend SWC poker too, been playing there for years and as far as I know they don't require their users KYC and only accepts Bitcoin as deposit, they also have a lot of free tournaments there and they also handle free tournaments specifically for BTT users. I'm not just sure if they have that $100k pots since I am not really a poker guy and wasn't able to explore it fully (just playing with few bucks to spend time) but I know they are trusted platform.
But the cons is they don't have that fancy modern UI or features but it's a good website and personally, I don't see any difference.
You can check their website here:
https://swcpoker.club/