What is the biggest cryptocurrency regret you have had?

What have been your biggest blunders so far when it comes to cryptocurrency? We all know that how much volatile the industry is. And the things that made you regret your decision?

I guess everyone can relate, not buying when the price is very cheap. Just like when ETH was it’s lowest in early 2018 or 2019, just below 100$ and me thinks that it is still expensive. And then we have a good bull run and it reaches a new all time high of almost $5k in 2021. That’s crazy profit right there if I have invested a lot of money on ETH. But it is what it is, just have to learn from it and move on. And then wait for the next big opportunity in this bear market to fill our wallets with cheap alt coins again