I would start with provably fair games like dice and never play commercial slots games
I started with dices, 5 years ago! My first crypto gambling game, I played dices like crazy! I love to play slots, especially the ones with bonuses and jackpots!
You can play dices with 1 mbtc, and to have fun with 1 sat starting bet, to try martingale, to try different odds. But if you wish to play slots, usually 1 spins is 1000 sats, I don't think you can find cheaper than that! And some slots have minimum bets at 0.2 mbtc or higher. So if you wish to play slots you need a lot of money for start, in that way you can play for some time and have enough money to rise bet in some moment.
I like card games, I bet on sports sometime, I play roulette when I fell wish for that. I just don't play lottery, it's not for me, to low odds for winning.