A casino with a good return must be licensed so all sites have the same RTP value. Much depends on the slot machine you choose and the number of players on it. There are online slots with an RTP of 99%, and even such a high coefficient cannot guarantee a win regardless of the time of the gaming session.
Choose official casinos
https://slotscasinoonline.nl/ for playing for real money, carefully read the rules before registering, receive casino welcome bonuses with withdrawal and replenish your account.
Don't forget to share your opinion with other readers. Responsibility and control over funds above all else.