Since there are many coins that have lost more than 90% of their value within the bear market, I do not think that it is reasonable to sell them at this time since the market is very bad. If you're holding bitcoin or ethereum, don't worry, the market goes down and up, the market doesn't go down forever, so keep holding and don't panic.

You should let us know which coins you are holding, here there will be people with long experience in the market who will give you the best advice.