I have done many mistakes that prevented me from winning big amounts, the worst one was a zero bet on 10000x limbo multi while I was trying to bet $3. The last misclick happened 3 months ago, I accidentally clicked the max bet button next to the double button on the gambling website, and ofc the result was 0.2x on plinko. Such things can happen, what we can do is to be careful and enjoy gambling as a fun activity while hoping for the best. Just my 2 cents.
I don't think it was a mistake but because your luck didn't come at that time, you thought it was because of your mistake. But in particular, accidentally clicking the bet max button is your fault. Maybe because you were in a hurry or thinking of something else, you didn't double check everything and pressed the button right away. For that one, I also often experience it in slot games and I intend to choose a small bet but in reality, I instead choose a bigger bet and lose. Well, we just have to be careful when playing gambling and always ensure everything is in order before we press the button.