Oh, well

I read a lot in this thread and understood a lot. Unfortunately, many did not understand that the so-called altcoin season started a long time ago, in March 2020, but at the latest in September. Only the players, i.e. coins, are now about different. The only altcoin that can reach the ATH from back then is ETH.
There are new coins since 2018, Link, Dot, Uni, Aave, Theta, Snx, Ksm.
All top coins that have outperformed Bitcoin this year.
You can still get a lot out of the trades, but if you didn't buy before September you won't get rich, just put it that way. Correction will come, maybe a crash, who knows.
And that is exactly what will herald the new altcoin season.
But that's just my opinion. Good luck.