Welcome here!
The first reminder that you should do before investing is only invest what you afford to lose.
These words are easy to read and hear but its hard to apply, many are still failing on how much they are investing.
I agreed with you, sometimes people invest there all money in crypto and after some loss they make loan and invest to recover and make more losses, investment here is totally risky and at this type of investment where chances are there to lose we should never invest our money which we can not afford to loose.