What are your biggest crypto regrets?

I've been involved in crypto since 2017, just dipping my toes in at that time with a little CPU and GPU mining. Some time in 2019 I bought my first little bag of a promising new project: MATIC. I sold it in late 2020 to buy more ETH to gamble on shitcoins.

One of those shitcoins, early this year, was SHIB. I bought it the day it launched and sold hours later for a 3x. If I had held, it would've been several million USD at ATH. I also sold LGCY and BNB at less than 1/10 of their current values.

Help me cope, reddit. What are your biggest crypto fuckups?