One sided friendship with my best friend

I’ve been friends with her since p5 I’m now sec 2, since last year she has been going through depression and self harming with regular attempts. And I’ve always felt like I put in more effort into our friendship than she does but ofc I understand that maybe she doesn’t have energy or motivation or maybe it’s cuz of me. But like we could honestly go a months without talking at all if I don’t text her first like I’m always the one who has to text her first or like call her. So I thought it’s ok maybe she needs some rest or she doesn’t feel like talking to people but then I see her matching pfps with her other friends and like texting them often when I’m hanging out with her. And you could say I’m jealous I guess cuz that would make sense but idk it’s just kinda hurts when I see her talking and doing stuff with other people when I have to like text her or ask her first like actually last time we used to match pfp for a long time but after a while she said she didn’t want to anymore because she wanted to choose her own pfps and I understood that so ofc I let her but now I see her matching with her other friends. Like ik this is so stupid but it’s sad to know I’m not her number 1 I’m pretty sure I’m not even close and it’s worse because I do have other friends that I’m close with but I just don’t have someone I can actually talk to about this kinda stuff and I actually feel so alone