Been reading this board for a while, thought I would drop my short checklist for choosing a casino site. After getting burned once or twice I stopped trusting the big banners.
First thing is the licence: see which authority is listed in the footer, and if your country is on the allowed list. Next come deposits and withdrawals: card, e-wallets and bank transfer should all be there, and cashout times should be listed up front.
Bonuses are the tricky part. Anything above 40x rollover is a red flag for me, and live tables often do not count at all. A useful overview with bonus rules, app info and payment methods can be found here Just Casino and it saved me some time.
On mobile I mostly use the browser version, and a good site loads fast and does not log you out every five minutes. Test the live chat before depositing: a real human reply beats a bot loop.
Anyway, that is my routine. Set a budget and stick to it.