If I am given a chance to go back to 2020 I would hold my ETH very tight and never let go, when covid was hitting the world at its best I thought it over and I sold 24 ETH which I bought at 120$ each, I never knew I was so damn lucky to buy at that price, learn to hold tight if you believe in a project, there are countless of projects in past years that are way bigger in value right now.
I have the same experience as you during the start of pandemic. I sold all my ethereum for $230 only not knowing that it will sky rocket not just doubled the price. But we have nothing to do about the past but to forget and just let it be an experience then keep on moving forward for another good coin to invest then if you can hold, much better. Market is really unpredictable!