Personally, slots give me frustration and lack of excitement, I am just full of emotional anxiety, it's also prone to let people get addicted with the dopamine rush
You should try slots with play money/demo mode. Buy at least 20 bonus buys or do 5000 spins in play money/demo mode. You will realize that it is hard to win. I know you already know that but this is how your subconscious will also agree with you and you will not feel anxiety. And one more thing, 99% of the time you will thank yourself that you did not deposit real money

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Definitely hard to win. My only experience with slots come from having free spins for some kind of promotion or whatever and basically it's a loss every single time. Recently I had 125 free spins at 0.4$ (50$ in total) and I won 33$ losing basically 34% of the wagered money. Also yesterday I had 20 spins at 0.1$, got 5$. Unless you hit big 1 time you are always operating at a loss. I don't see why people get excited over a game where you lose 90% of the time, haha.
I stay with sports, it's also unpredictable at times but the rtp is much better, especially if you know what you are doing.