punter_ihorLong time lurker here, but I figured I would share what I look at before signing up anywhere. After trying maybe a dozen sites I stopped going by ads alone.
Licence comes first for me: check who regulates the site, and if your country is on the allowed list. Then payments: I want at least one fast e-wallet option, and there should be no weird fees on cashouts.
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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.
Anyway, that is my routine. Treat it as entertainment, not income.