Generally speaking 2x an amount is a big achievement because it is not possible to make such a profit in 1 day out of nowhere but when you gamble you can't think about it naturally.
I agree with you, for me the best thing you can do when playing is not to expect profits and less than 100%, but I sometimes feel that people make a mistake, that when you enter a casino you should win and multiply it and it is not like that, sometimes arriving, playing and winning at least 5% that is already a great profit, it is worth withdrawing, for me it is like that, because when things do not work out, it is better to stop and come back another day, but basically do things right, that is, have the money ready to lose, that is different, because if you have to lose, let's say 40usd, then those 40usd are going to be gambled all or nothing, if you lose you assume it, if not, then you Withdraw your money , that is the way it should be.