I made the same mistake, I sold 20 eth at a price of $ 180 and now it costs $ 265, I bought at a price of $ 255 and the price is $ 210, and now I still hold it until the price is over $ 300
The classic mistake when someone tries to trade without analyzing the market.
If there is no knowledge in this area, then you can read the opinions of 3-4 experienced traders (now there are many Telegram channels) and make your decision.
It's much better than trading at random.