I never did. Getting involved with Bitcoin or Cryptocurrency as a whole was one of the best things that ever happened to me. Yes it was, and still a bumpy ride. But it's all part of the process. Whatever misfortunes we encountered or experienced in this journey are results of our own decisions. Meaning, we have no one or nothing else to blame but ourselves. Bitcoin/crypto has nothing to do with our losses. It is an opportunity that could turn out good or bad for us depending on our decision making.
I regret that at Bitcoin when I put a coin into my wallet I forgot my password and I regretted it when I lost all the coins I got and I will not repeat
Hmm...why do you regret that? Take it as a paid lesson. There's no need to regret things that are already in the past. Learn your lesson and move on. I never regret my involvement in crypto. Why should I if I can exit any minute?