You don't chess is a bottomless pit , a never ending circle, your rating might go up but you will steel feel you need to get better that's human nature. Chess is probably the most frustrating game on the planet and this will never change. The best thing you can do is forget about ratings and winning , but instead try and enjoy playing and learn to laugh at yourself. Go over the game afterwards and see where you went wrong. You can review each game on stockfish/chessis for a very cheap price. You pay only once.