Is my friend a good friend ??

Ok so let’s start. Don’t get me wrong on this one I‘ve experienced many funny things with my friend but sometimes i wonder why she acts like she acts. For example she will talk hours on end about other friends without thinking once about how i feel and when we aren’t doing smth like swimming in a pool or things where she can’t tale her phone out she is constantly on her phone chatting with all her other friends or even phoning them while I’m with her in the room hanging out with her and it really makes me wonder if I’m just not interesting enough. Smth that also bothers me a lot is how i always have to do everything in our friendship. Like we will be chilling on our phones at a sleepover and she’ll ask me to massage her back and i‘ll do it for her cuz we’re friends but when i‘ll ask her she won’t do it or do it very poorly. Or when were at my place she‘ll go ‚bring me something to drink‘ but when I’m at her place i have to do it myself again.
But besides that I also have very much von with her it really sounds worse than it is but sometimes i just wonder how it‘d be if we switched roles…