You are lucky that you are making profit from trading not everyone here can, and this is the reason why people prefer to HODL than to trade, they know the risk of storing their coins to long on exchanges for trading purposes, it's good if you can retain only your profit in exchanges but it's very tempting to store your coins in exchange if you know how to trade or very active in trading, this is one of the risk of traders.
I am not a day trader, and yes I agree with you about it is not easy to make a profit in trading, best traders have a lot of money to be the bests and not everyone can tolerate that much loss, Actually, I am not a fan of holding and I always would rather keep the extra money that I am not working with , in the form of stable coins, I am not very interested to get affected by fluctuations of each coin, not even bitcoin, I always would change some of my profit each month to gold, so I know that I would not touch it and keep my profit out of access because even If the internet goes down I can still sell gold but maybe not bitcoin!