Learning is constant in trading. Educate yourself continuously and learn from every mistake you gained from trading, that way you will surely grow and progress in your trading career. Also, know that every trader has its own fair share of losses and as long as you never end up quitting and continue to take risk in trading, and you keep on trading with caution, then experience will make a you better and successful trader in the end. Just trust the process as everything in trading can be learned and mastered.
Losses are part of trading, and it's very normal for traders to experience them, so don't be overly afraid when faced with situations that make our trades lose. As you said, the desire to grow should come when we experience losses, because it can be a big driving factor if we can turn it into a high motivation so that we are more active in learning things related to trading.
I am very sure that someone who is already a professional trader now started trading by experiencing many losses too, but they can improve from what they experienced in those losses. I have a belief that every successful person must have experienced failure.