beginners often lose bitcoin because of point 1. I think this is because beginners only see the movement of the bitcoin increase chart in a short time without thinking about the long term. so it's easy to get stuck in the opinion phase, get rich quick. this is wrong, because in crypto everything requires a process and there is no instant rich
But disregarding that reason, I think it's more of the impatience that causes them to loss money, they panic when the prices are going down which ends up with them having to sell their bitcoin at a lower price because they're scared that it will only go down to that point. Plus, there's the short-term mentality of the newbie, they don't exactly think at the grand scheme because they're scared that it's all a scam at the end.