We can all have mistakes even expert can have mistakes and loss a huge amount of profit. It is normal to be sad when we loss but we need to stand over it and be more prudent in our trading journey, because not all of the time we will loss if we stand and continue to do trading we can possibly get some earnings than losing.
Interestingly experts have even bigger losses as well. A friend of mine turned 4k dollars into nearly 180k dollars, he thought that's enough for him, he bought a nice car (Mercedes s series, it is so awesome) and for the rest he just put some back into crypto and the rest into savings account. What happened? He bought 60k dollars worth of a token that was obviously a scam, and got scammed, how can someone who was smart enough to turn 4k into 180k ended up getting scammed on the most obvious way?
Well, he wasn't caring anymore, he was just idling by and didn't have the hunger. That's the most important thing when you are in the crypto world, to have that hunger. If you do not care and do not check then even when people around you warn you, you still do the wrong thing.