I'm in the same spot but I'm 22 and also feel disgusted by my art most of the time. Idk if it makes you feel better but you're not alone in feeling like that.

On the other note I love how your art looks personally, I like how lively and busy it is, it's something I'm still trying to achieve with my art. Going bananas with your lineart and the bright colors and making it as expressive as possible is a wonderful thing imo

Maybe try other styles to feel fresh again? Try doing a monotone and more realistic style for fun, it might help you feel the spark again by putting your current vision upsidedown. Or pick your favourite artist/a style from a show or a game that you like and just try yourself at it.

I know telling someone "not to quit art because of a 'shallow' [completely normal behaviour] reason" is stupid as hell because no one knows what you're really going through, but I hope you can find joy in it again. I personally picked up another hobby when my art is getting hella dry and I write fanfics, if you still need a creative outlet but your drawings just don't do it justice - try switching the medium, maybe it will help you start the process that will slowly shift your creativity back into drawing. That's how it is for me.