My gf i going live on tiktok and it starts to bother me

Me 18M and my gf 18F we've been dating for quite a while now, its been like a year since we started dating.

to be honest our relationship is healthy and we are understanding.

we had an argument one time we broke up and then we got tg again.

Lately i noticed she's being more distant, like she doesnt reply to my texts like she used to. disappearing for long hours, telling me shes with her familly while doing smth else.

and how i found out is yesterday she said she had a familly matter or smth and that shes busy anyways i didnt think much about it, i slept and when i woke up i found out that she went live, (someone told me) matter of fact she never told me abt it.

and its not the first time, she adds guys without telling me, or asking me if she should add them and then delete the message

i dont think much of it but, its starting to bother me, specially after the tiktok live, because from what i saw, some guys were hitting on her and saying if shes single and she doesnt even say that she has a BF

more guys are adding her and i dont know what to do.

TL;DR!:my gf is getting distant and oppening lives on tt, acting more friendly to other guys, idk what to do