My opinion, Bitcoin all time saving mode is the best way. Some time when bitcoin price up then sell and when price down then buy is the best decision. This method all time not working for trade. Many time i noticed when i sell bitcoin or altcoin sell since then price grow up and up. And when I buy bitcoin or altcoin then price low day by day. specialy, altcoin hold, sell and trade big loss. 4 years ago few coins i hold for future. now this coin price few value or most of coin value is zero. Few coin trade, there too big loss. past year in the case of 1 coin invest $1000, this coin price today zero.
It's alright to learn something when it is too late, if you were aware of the situation beforehand and get out, then you would have done the same thing later on, and lose eventually. It's better to lose money early on so that you would learn all these lessons and then later on when you get in with serious money then you would have all the answers to these problems.
This is just about problem solving, nothing more, you need to figure out what causes you to make bad trades, and lose money, and that's the problem, and then you need to find how you can avoid doing that and instead make a profit which is solving it. Best method is to realize the problem, and you did.