Personally, the main criterion for me when choosing an online platform for playing is the availability of convenient payment systems with fast transactions. That's why lately, I prefer online casinos that accept BLIK payments in Poland
https://kasyno-blik-online.com/ which offer quick and secure deposits. But I want to mention that these platforms also run various promotions with different bonuses, so they should suit you as well. I also really like their large selection of games, as there's always something new and interesting to discover.