I guess we all know what the answer to this question is now, we should have sold as those would did are better now as they can buyback their tokens at a more discounted price then what is was one year ago. From past history, the second year after a halving of Bitcoin reward, the market tend to crash, creating opportunities for investors to get some coins at a very discounted price. 2022 was no different as it was bad year for investing in cryptocurrency instead you should hold on for confirming before investing.
Tokens you'll buy will be known when the market recover, if you're doing that now then you're just gambling as selected coins could be the ones to go down in price more while the others win..