(22M) How do i get clearity from this girl without being creep i don't know what to do here?

I've been texting and sending her reel for about half an year we had a call sometime and it last quite long overall I say conversation are healthy and mostly about sharing things like not asking questions like what you like or how is your day i've never asked those kind of questions (find bit weird some how). On insta i share and react to her reels she also do the same but i find it weird that she delay replying to my text even on whatsapp like even i send her reply within minutes she reply in hours, and might feel anxious due to this like what did do wrong that kind of thing, i feel like I am becoming sick with her reply when she doesn't reply i feel low but when she i feel live.

I don't know what to do how to recover from this or make my situation with her good again