Quitting because of initial failure is actually not a good idea because others who persist and didn't quit will definitely get bigger someday and you would wish you had continued, it is very normal with trading that you will definitely become successful some day only if you stay consistent and keep improving on your trading skills, continuous study and practice gets you to the point bof optimal profitability and becoming the best in the game, the mistakes helps you get even better because you learn from them.
You are right, those who correct the mistakes they make in trading will of course be even better at the trades they make because they already know how to avoid the losses they have experienced.
It doesn't mean that we already know a lot about trading, so let's just rely on what we already know. It's not like that, of course. Even at the point where we are making a profit from trading, we should not stop learning about crypto trading.
The more we experience profit here, the more we encourage you to continue learning about trading somehow. You never stop learning; instead, continue to learn to grow more in the future.