Mostly a reader, rarely post, so here is my short checklist for choosing a casino site. After a few bad experiences I stopped trusting the big banners.
I always start with licensing: check who regulates the site, because some sites quietly block certain regions. After that I look at banking: I want at least one fast e-wallet option, and there should be no weird fees on cashouts.
Bonuses are the tricky part. Anything above 40x rollover is a red flag for me, and some games count less towards it. A useful overview with bonus rules, app info and payment methods can be found here [url=https://www.signupforms.com/registrations/49801]Pure Casino[/url] and it saved me some time.
Most of my sessions are on mobile, and a good site loads fast and does not log you out every five minutes. Test the live chat before depositing: slow or scripted answers usually mean trouble later.
That is about it. Only play with money you can afford to lose.