Personally if I want to turn a small amount into a quick x profit for fun I do,
10$ into 5-10x I see the most success I have with games like Mines.
I try avoid slot games with low budget, what is your "safest" game for you that you feel lucky on, and have most fun with?
If you gamble for fun, don't try to make a quick profit. When you try to make a quick profit, you won't have much success gambling. You will quickly become addicted instead of having fun.
Mines games are very risky. You won't be able to get very lucky here, but if you want to have fun and get lucky, you can play slots, spin dice games and get 5x-10x profit there.
I always participate in sports betting and can achieve fairly good success in sports betting because I have a fairly good understanding of sports. Sports are my favorite for entertainment and profit.