I really need to reconnect with my faith again

As a second-year university student, I'm struggling and genuinely dislike my current life situation. I understand we should always be grateful, but for about a year now, I've felt completely stuck. In high school, I think I was a pretty dedicated Muslim-I started an Islamic student group and served as its president for two years, putting in so much effort to get it established before I graduated. I'm still proud of that. My faith felt strongest then; I never missed prayers, fasted every Ramadan, and spent nights praying at the masjid. Since starting uni, though, everything has been slipping. Last year was especially tough mentally and emotionally. Part of that was due to a really disappointing situation: I had feelings for someone, but my closest friend ended up getting close to them without telling me, which really hurt my confidence. Obviously, I wasn’t going to pursue anything, but it still affected me deeply. I completely neglected myself-stopped exercising, overeating, and even failed a course. I'm studying physics, which is one of the most challenging majors, and I chose it because I loved it in high school and admired how perfectly Allah SWT has designed everything. It used to bring me joy, but over the past year, I've just fallen into bad habits and drifted away from my deen entirely. I feel like I wasted the last Ramadan and this one too-I prayed throughout Ramadan but started skipping again afterward. I'm trying to slowly get back to the gym and eat healthier, but I just feel so stuck and bitter about everything. My parents have noticed because I've always been cheerful and talkative, but now I'm just negative. I hate university, I hate studying, I never want to do anything. Most days I waste time doing nothing, and I don't know how to break this cycle. I really, really want my iman back. I want to be close to Allah SWT again.