I use Kraken.com for my wallet and buying and selling crypto. I also use Dogecoin as the fees seem to be the lowest (I only bet £50 a week, and it’s a couple of quid by the time I’ve got the crypto into the site). I don’t use BC.game though, my crypto got stolen and it took them an hour to respond to my chat, but which time there was no chance to stop the transfer. BC.game honestly couldn’t give a shit about it. Whatever site you use make sure to use 2FA protection.
Crypto isn’t difficult, just a bit scary the first time and it normally takes about 30 minutes for the funds to deposit and overnight to withdraw.
Good luck.