It depends on what you like and need. I would suggest a reliable website with stable payments, not those offering tons of money. Beware of multiple scammers over there.
If you want to try what I play, then go to the online casino Suomi. It’s a cool local casino that’s more reliable than many bigger ones. I like it because it offers multiple games, including slots, and pays on time.
You can also look for casinos that are located in your country and will pay you in your local currency. However, evading taxes is easier if you get money from services outside the country.