Learning from past mistakes is how humanity grows as well, that's the thing that allows us to grow as much as possible. I can tell you two things that history has proven so far
This is the reason i always recommend every new traders to start trading with real money and don't follow any youtuber or telegram channel. As a newbie one can make many mistakes but these mistake will teach many skills and every mistake will increase your confident and next time you will be able to trade free of tention and as OP mentioned The more you trade your emotion will be controlled.