There is nothing like 'buy low/cheap, sell high/expensive' in crypto that is volatile in HUNDREDS of % within just 1 year. There are no reliable fundamental predictions, p/e ratios or quarterly earnings results for the coins, everything is (pardon that word) sorta in a bubble. What is down can be far lower.

I don't feel like buying anymore but don't sell a damn coin either. I'm in kinda bear-like hiatus to wait & see long-term with the stack I've got already, don't even trade among the coins if not necessary. Consider all investments to be lost to avoid over-thinking the shit.