Feeling lost and seeking a way back

As-salamu alaykum. Back in my childhood days, I was that kid who never missed prayers and tried to stay on the straight path. But these past few years have thrown me totally off course. I've drifted far from my deen and fallen into so many wrong habits. I've developed an addiction to inappropriate content and struggle with it daily, feeling terrible each time. It's been ages since I last prayed properly. My sleep is a mess, and I waste hours just scrolling endlessly. My studies have suffered badly too-there's a big exam coming up next year, and I can't focus because of all this chaos. Dark thoughts keep whispering that I've gone too far and there's no return. But deep down, I desperately want to reconnect with Islam, bring discipline back into my life, and, above all, return to Allah. Any advice on how to start turning things around?