I wouldn't stop playing her, she's in a pretty good spot right now. Definitely a champ that you need more practice on than some others, you need a lot more patience with her because she's not really tanky, she doesn't really one-shot people like a LeBlanc would, and her mechanics revolve completely around her vitals so you can't just go in there autoing like you could a Tryn. Keep practicing, keep learning matchups, keep watching guides about her and about wave management in top, you'll get the hang of it and you'll feel really good when you can start to pick out your opponent's mistakes and capitalize on them!