I feel like my girl best friend isnt putting asmuch effort into the friendship as i do - what do I do?

I try to break it down and if it doesnt work ill repost with a better description.

I (M24) have a girl best friend (F19) and we got close as she broke up with her boyfriend which was a rather ugly ending, yet i helped her and cheered her up and gave her someone to vent and talk to with no intentions except helping my friend. Idk how but we eventually started cuddling and then we started making out slowly (no kissing, "just" feeling up) and made sure she wants this.

After tune we did it nore frequently and it was almost a fwb except actual sex, kissing and more than foreplay (Ill leave it as that).

With the time i felt that i was more and more attached to her and we were very close.

Im a very touchy person and have the "anxious attachment" type while she likes quality time ans often needs space ("anxious avoidance" iirc).

I tell her if something bothers me and if she could try to stop doing it oe change it for me, and she said yes and that shes sorry and that she understands me and she wants to change. Esp since we were closer and closer i worried a lot abt her when shes going to the club since social media and some stories from friends gave me the fear of cheating (even tho we were never in a relationship).

Many smol things changed and things were going very nice, sometimes indont agree with her view but thats okay since she is herself and i dont want a copy of myself, would be nice if we agree on a lot of things but we dont have to agree to all things.

Since the last 1,5 months some things went backwards again and she started doing stuff ive told her like 5+ times that i feel bad and dont like her doing/saying that (saying as in pronounciation).

Generally i feel like i change a lot for her and give a lot of effort but i dont feel the same from her. For exaple we have a "deal" that she pays more attention and listens and answeres to voice msgs and i try to not annoy her with reminding her x times a day. Or i really like and "need" emojis in text, esp in stuff like "i like you" (and then theres a i like you too) vomming as a response, fairly ... Simple and nice overall. If she forgets to answer and only reads or sth else ive told her that i dont like i feel bad and overthink easily and dont really "understand" why she "still" hasnt realized that that behaviour hurty me even tho ive told her multiple times and we talked abt it. She always says shes really sorry and tries to change and tries to put more effort into it but ... For me at least it doesnt feel like it.

If its poorly written and/or the point isnt clear ill rewrite this better - thanks in advance. Fyi the f+ ended and we were never in a relationship.

Tl;dr Infeel like my girl best friend does not put effort into the friendship and to my/our (mental) wellbeing as promised.