I think majorly you have refused to apply your past lessons and knowledges into reality
Trading in crypto currency is not all about learning.
You also need to apply the knowledge; or you keep making the same mistakes over and over and over
One need a skill to analysis the current market to survives and must have a knowledges on what tokens to invests. Mistakes are being to make but do not make it to often or you will loose over and over. Try to minimum the mistakes and try to pick only the best tokens that only really can delivered what they promises and really solve peoples problem. Invests smart not try to be smart by picking random tokens and hope for it to rises.
The fact is that in another way, probably, it is impossible for many users of cryptocurrency to do. What kind of analysis is not carried out, And the result is still the same. How to identify a fraudster, if already fraudsters also work very accurately, that they can not be caught in a deception.