What's the opposite of FOMO

Like FOMO as in the buying into an asset at any, probably inappropriate, time just to join a bandwagon.

I encounter the opposite. I am observing crypto since 2014, where I once spend like 3k on mining equipment and participated in altcoin shenanigans. Since then I never bought anything in or for crypto again.

I didn't buy BTC at 1k because now it was too high and wanted to wait to "buy the dip". I didn't buy when it crashed to 400 a year later because now it's probably never recovering.

I didn't buy BTC at 10k 4 years later because now it was too high and "lets wait for the dip" and didn't buy the dip because well maybe it won't survive again.

The same happened at 20k, at 50k at 60k and so on.

Each time I tell myself, "I should have bought".

Now I am left with some $4.5k worth of remains of my shenanigans 10 years ago. It's not much but also not nothing. And I still can't get myself into buying in. Well at least I am not at a loss from my one-time investment. But if I had spend that 3k on BTC back then and hold it, I could own half a million now.