highroll_hdKlLong time lurker here, but I figured I would share how I pick an online casino these days. After a few bad experiences I stopped trusting the big banners.
Licence comes first for me: find the licence number and look it up, and whether they actually accept players from your country. Next come deposits and withdrawals: I want at least one fast e-wallet option, and the withdrawal limits need to be written clearly.
Never judge a site by the bonus alone. Wagering of 35x or 40x is normal, and live tables often do not count at all. A decent independent write-up with the current terms is worth a read here [url=https://www.tumblr.com/soldkryptohub/829805089298513920]Winzter[/url] and it saved me some time.
On mobile I mostly use the browser version, so I check how the lobby works on a small screen. Test the live chat before depositing: slow or scripted answers usually mean trouble later.
That is about it. Treat it as entertainment, not income.