I can't give much advice without knowing more about your situation. But is it possible you care too much about your rating and win ratio? Deleting your old accounts won't make you a better player. Sometimes the fear of losing points (or tilt from a losing streak) causes you to play worse chess. In those situations the best thing to do is just take a little break.
Also, rating fluctuates. When I first surpassed 2000 I dropped down to 1900 shortly afterwards, but I kept playing and my rating got back above 2000 soon enough. If you keep studying and practicing you'll improve, even if your rating doesn't immediately reflect it.
Hello, I'd like some help!
I was a very good player ( in february I reached 1880 rating in 10 minutes games). Not only that, I felt like I was making some brilliant moves. At some point, my rating started to slowly drop. It dropped so much it reached 1590 after a lot of games. My win-ratio became like 10% when it used to be 80%. Since then, I keep deleting my account to create a new one once in a while, but my chess never improved again.
What should I do? Should I give up chess? Be honest, I don't mind.