The biggest mistake Ive ever made with crypto was I took a 1200$ loan in 4th quarter of 2021to invest in a meme coin that later tanked down to 70% loss, I was deluded with 100k BTC by December and also the beginning of a bigger altcoin season, I wish I listened to some advices on here instead of relying on some crazy youtubers, my own crypto journey started with huge loss i hope I will make them back some day, if you are new to crypto do not take me step.
Everyone, before starting to invest in cryptocurrencies, should have notions of investment in general, and personal finance, such as the following.
1) Have an emergency fund for unforeseen events.
2) Do not invest money that you need in the short or medium term, depending on the term of your investment.
3) Never borrow to invest in highly volatile assets, and even less based on what you have heard from some Youtubers.
Etc.
Read about personal finance and investing before investing in anything else.