You say you’ve tried everything but I bet you haven’t even looked at the newer crypto casinos that launched this year. The industry has completely shifted toward crypto bonuses because traditional payment processors are cracking down on gambling transactions, especially for US players. BetWhale just launched last month with a solid 250% bonus and 30x wagering which is actually reasonable compared to the 60x+ garbage most places are pushing these days. Then you have places like Katsubet offering 325% up to 5 BTC which is absolutely insane if you can handle crypto deposits. 

These new casinos are literally throwing money at players to build their customer base, but sure, keep complaining about not finding anything new while refusing to adapt to how the industry actually works now. Also the fact that most of these new places have instant crypto withdrawals should be enough reason to at least try them out instead of waiting 2 weeks for a check from your “trusted” old sites.