Feel like i'm very close to a dead bedroom and looking for some advice because i just don't know what to do.

I'm 25m, my girlfriend is 22. We've been together for 4 years, living together for 1 and a half. Sex life used to be great, but over the last year or so it's really gone downhill quite a bit. I definitely wouldn't say that i have a high libido, i'd be more than happy having sex maybe 2 times a week, but she seemingly has absolutely no libido. I'm sure this is a pretty common story on here but i'm just venting a bit.

The thing that bothers me the most, is that she just doesn't seem to care. I've made it very clear that i'm unhappy with our sex life and how it makes me feel terrible about myself. If she were coming to me saying things like that, there's nothing i wouldn't do to try to fix it. It feels like she'd be perfectly happy never having sex again and that just hurts.

I'm sick of talking to her about it at this point. I try so hard to have a calm clear conversation with her, but i end every conversation feeling like a disgusting pervert who only cares about sex, because to her it's no big deal that we're not having sex, and if i have a problem with it it's just my problem. I will say now that the rest of our relationship is great. This is our biggest problem by a wide margin.

She doesn't have an overly stressful job, has been on the same birth control for our entire relationship, gets enough sleep, doesn't have any severe mental health issues, is seemingly doing a lot better with her self image/esteem recently after loosing some weight after becoming a vegetarian. She says she's still attracted to me but it's pretty hard for me to feel like that's true.

I just don't know what to do and i'm losing hope that it'll change.

Personally, i think her biggest issue is that she never puts her fucking phone down. From the moment she wakes up in the morning until she goes to bed at night, she's engaged in several conversations with several different people. She's constantly talking to other people all day long. I don't think she's messing around or anything, she doesn't hide her phone or do anything to make me think she's being unfaithful. It's just that she has 5 or 6 different conversations going on pretty much constantly and i think that just distracts her from literally everything else going on around her, including my feelings. She just doesn't have enough mental bandwidth left to think about sex. That's my working theory anyway. Might have just convinced myself it's her phone that's the problem and not me lol.

I think that's all i have to say for now. Any advice is greatly appreciated, but i think this post is mostly just so i can vent it out a little. I'm thankful this place exists so i have somewhere to do that.