and I often laugh when I see people buying crypto when the price is going up,
I also laughed at reading this, if everyone has thoughts like you, how did bitcoin in your opinion at that time touch the "high price"? Bitcoin went up due to buying action everywhere. You're not completely eliminating the risk of losses even if you bought at a low price (from your perspective). So I'dn't gonna laugh at anyone buying bitcoins in any market situation.
your insight is very good, and it's true that buying crypto at high prices doesn't matter because the price of crypto goes up because many buy it even though the price is expensive, and indeed with so many profitable investors. Your advice and motivation is very good.