I agree with the VPN suggestion; I've personally gambled with VPNs and proxies on various online crypto casinos with a few hundred dollars per site and I haven't been caught yet. There's definitely some risk involved with using a VPN, but I dont think it's incredibly high and I'm willing to take that risk. KYC's really the bigger issue with casinos now as it really takes away your options if you don't want to verify yourself. Searching's your best friend when you're trying to find what sites require KYC- some sites require it on withdraw or something of the sort to prevent winners from withdrawing.
As for 777coin, I've never had any issues with the casino but I also haven't played on their platform a lot. I'm also a US resident for reference.
many casinos frown if you are using VPN
especially if it is a public free VPN or a cheap one like Nord VPN etc.
they would try not to pay you under a pretext of you using multiple accounts,which can be not far from truth from their point of view
since there might be another guy playing at the same casino using the same VPN and country
777coin and its sister site bitvest.io never had any problems with the US residents
you can deposit and withdraw without any hassle or KYC of any kind