How bad is Seraphine support?

I have recently been informed that Seraphine is kind of bad at being a support. Which I kind of found surprising because I’ve only been playing her(didn’t know better) and I’ve been having fairly good luck with her. I only have trouble with Pyke and Lux.

I’m a relatively new player and I’m pretty low rank so might have a different perspective but is she really that bad?

I’m support main and I only play Support . I refuse to learn how to CS. Am I doomed to never play Seraphine ever again?