Need advise on crypto investment

Hi, so I did crypto investment in 2020 and made good profit and since the downfall began in 2021, I didn’t do. Whatever’s coins I purchased remained as it is. I didn’t now withdraw it or sold them. Now, I feel like in this market I want to make profit. So I wanted to know is it wise enough to sell those existing investment only and trade using them or I should consider putting new money for new trading ?