My journey began in December 2020, when a friend invited me to Kuailian, which offered to earn money for leaving just a small capital. €400 is what 1 ETH was worth at the time, which was what they asked me to create the account.
They barely gave me cents and there came a time when I had nothing. It took me months to recover my investment, and I was barely able to withdraw €300, when at that time ETH was already at €2000.
Throughout that process, I got fully into researching Bitcoin and other cryptocurrencies.
Despite that mistake, I have lost a lot, precisely for the same reason as you, not selling when I should have. And also some other scams and friends with; "trust me, this 'shitcoin_name' is the one to be rich".
Now, I have managed to accept my losses and I only have a couple of cryptocurrencies to play with and bitcoin that I convert every month. I continue to spend in euros on my purchases, and I am testing whether the stores I usually use accept Bitcoin (no changes at the moment).