I think it's a mistake but it's not a big mistake, so there's no need to worry about it, it's a natural thing to happen, after all, you've already benefited 3 times, I think everyone involved in the crypto world has experienced mistakes, it's the same with me personally. I've experienced something similar at different times and I don't regret it.
Don't remember too much, but make a lesson to improve it. True to what you say, no trader is perfect without losses. But traders learn to avoid it and return those losses. That's not to be regretted, you just do what you can do to the maximum. Take advantage of the moments and discipline the rules you have made. Of course, all require learning and not a little time. But I'm sure one day you'll enjoy the results.
It needs more time and effort to learn out from trading and these bad experiences that we have could always be a tool in order for us to improve and to value trading. This could prove that there is no easy money in trading, it is all been a struggle when doing it. But why do we never stop despite those losses and hard times? It was because we want it and we feel that trading is for us.
I'd fine no regrets when having bad times in trading. Yes, because even how much we care about not making any mistakes, but somehow we don't have any escape. We'd rather face this sad reality in the life of trading.