I feel like I am getting worse at playing games the more I play!

[L]

No matter how hard I try to practice and play, my ability only starts to deteriorate! I feel like quiting playing games for the rest of my life and game only make me depressed!!!!

[Quint the Alligator Snapper]

Don't use videogames as a proxy for your own skill at things. There are many other games -- and many other skills used in games -- than simply twitch reaction times or gamesense with a specific game.

If you're playing a single game way too often, try taking a break from it. It might actually help in clearing your head and giving you a fresh perspective on it.