1305 is way better than average. Yes, I could quit chess if it wasn't fun for me anymore and turned out to be hurting me. No, I wouldn't necessarily recommend that to you considering how your account is less than a month old. You are more likely just not familiar to the natural swings of rating and variance.
If rating and competition bring you down, then you could also consider unrated games, chess puzzles, going over Grandmaster games and other ways of improving your overall chess ability (and perhaps love for chess) without risking your rating, or exposing yourself to competition you don't like.
This is me I'm addicted, but I also s u c k at this game best rapid like 1305. I don't know if I should just quit entirely? If you can't be even among the best or even expert level, should you waste your time? Just a thought.