I Can't Find the Heart to Pray Anymore, and I Need Your Advice

Assalamu alaikum, please read this if you wish to help, it might lead to a solution. I'm 20 years old, and for over three years I used to pray. But how I started back then was a bit different. My family would try to advise me, and while their intentions were good, the way they put it just rubbed me the wrong way. They'd say things like, "You don't pray, so your life is worthless, all your good deeds mean nothing." Or, "The only thing keeping you from prayer is your phone." Those reasons felt shallow to me. I was always curious and loved to research, and I did well in school. I used to think that if I weren't born a Muslim, maybe I wouldn't be one at all. So I had to dig deep and truly understand Islam on my own terms, not just follow it superficially. That's what I wanted. One night, I made du'a asking Allah to let me pray consistently and never stop-and from that day, I did start praying. Not because anyone convinced me, and honestly, they had kind of given up on me. I wanted it for myself, by Allah's help. But as years passed, I was at university-one of the top ones, alhamdulillah, but the schedule was incredibly demanding. I'd wake up before Fajr to study and wouldn't come home until 6 or 7 pm. It was so intense I felt like I was losing my mind. That pushed me to combine prayers a lot, and sometimes I'd just crash and miss them out of exhaustion. On weekends, I'd try to make up what I'd missed. Slowly, I noticed I was rushing through my salah, not giving it its due, until I started skipping some here and there. Then I slacked off on both studying and praying, wasting time sleeping or scrolling on my phone. Bad habits crept in... until I stopped praying entirely. I'm ashamed of myself and where I've ended up. I don't need to list my bad habits. I've lost my zest; nothing truly excites me anymore. Life feels dull, and worst of all, I've lost the drive to pray. It now feels like a heavy chore, and I avoid it-and avoiding it, sadly, gives me a kind of relief. I'm on a break now, so I need guidance to get back on my feet and reestablish my prayers. But even with free time, I just don't feel like praying. This has made my family give me harsh looks, especially since I live alone and visit them now and then. Some days they advise me, other days they stare disapprovingly and say hurtful things. I don't blame them-I've messed up, and they're right-but it doesn't help me feel better. They think I haven't tried, but I have. I've listened to every podcast about salah, I say istighfar, I start praying again, and then I stop, because it just feels so difficult. My heart is worn out, and I want to be truthful with myself. I'm no longer good at praying; it's become hard. Please advise me... I'm running away from it all, passing my days without any prayer. Oh Allah, grant me a humble heart that does not grow lazy in worship, and keep all Muslims steadfast on the deen. Ameen.