The worst decision i ever made with ny bitcoin is to put all of ot on gambling but luckily at that time i am not earning that much than now and luckily i also learned from that mistake
That was not a mistake. You've chosen to put it all out of your own will. Then you will call it a mistake when you lose? So what if you won?
A better term would be a "lesson".
Not sure where you got the meaning of mistake but it wasn't the dictionary "an action or judgment that is misguided or wrong.
"coming here was a mistake to reply to you because you will probably not learn from it, so I am wrong thinking it might" it was indeed wrong and misguided to gamble what little money the poster above had. AKA a mistake.
OP my worst decision was also to gamble but I dealt with that early on and only play poker now. It balances out because my best decision was taking a jump into crypto in the first place.