Loss may truly be part of the game indeed, but we must not have to pass through this hard way before we can learn to know what bitcoin or crypto is all about, i don't buy the idea of learning in a hard way, but for us to be able to prevent this from happening, we have to be more conscious of the things we do and how we go for some of the offers we see online in a random manner, before we can do anything, we need to learn how its been done, take the effective risk measures and be able to control our emotions not to go too far in it for a start that we lose in a big way.
Anyone can learn trading through a demo account that contains virtual funds. As for investing,, I don't consider it a real loss unless the investor sells at a loss, so Fluctuations and price drops is part of the nature of this volatile market, and patience is the key.
I see that learning through practice is a good approach, but it shouldn't involve real money, or at most, only a very small amount that is hardly worth mentioning. No beginner should give up, as everyone started from the first step and ladder.
What the OP mentioned is important advice, especially about risk management, as many ignore this important advice despite its great importance.. Managing your capital wisely also is a smart and essential strategy for success in this market and for avoiding potential major losses.