I FOMO'd in at ATH and basically lost most of my investment.
Only the BTC portion of it remains intact, although still in a loss position.
I seriously doubt you're alone in having bought bitcoin and some hyped-up altcoins when they were at their all-time highs. Lots of people start to feel that FOMO and do exactly what you did, and it's why the market got as overheated as it did in the first place.
Tron is an interesting coin, but Justin Sun seems like a complete huckster, a snake oil salesman. Sometimes a coin with real utility can overcome its origins, but I don't know about Tron. If you're still holding any of what you bought two years ago, you'll probably be waiting a long time just to break even (IMO).
Bitcoin is another story, though. Even if you bought it at $20k, I wouldn't dump it now and cut your losses on it. I do happen to think it's headed higher, but it has to break through the $10k barrier first before it starts approaching a new ATH. That could take a while. In any case, think of your experience as an education--even if it was an expensive one. If you learn from your mistakes, hopefully you'll be less likely to repeat them next time a bull market rolls around.