Mostly a reader, rarely post, so here is what I look at before signing up anywhere. After getting burned once or twice I learned to read the small print first.
I always start with licensing: check who regulates the site, and if your country is on the allowed list. Then payments: crypto is a plus but not a must, and cashout times should be listed up front.
The welcome offer is where most people get caught. Anything above 40x rollover is a red flag for me, and some games count less towards it. A good recent review that covers all of this is worth a read here meer informatie before you deposit anything.
I play almost only on my phone, and if there is an app I make sure it comes from the official page. Ask support one simple question first: if they answer in a couple of minutes that is a good sign.
Anyway, that is my routine. Only play with money you can afford to lose.