Feeling Overwhelmed by Loneliness - Need Advice, Brothers

Assalamualaikum brothers, I’m a 19M college student. I’ve never been in a relationship, I try to avoid unnecessary interaction with non-mahrams, and I stay away from music and haram content. I keep up my five daily prayers, do my adhkar, and try to follow basic Islamic practices and more. Alhamdulillah I work hard to protect myself. Still, the loneliness is really heavy. All day my mind drifts to thoughts of a future wife (if Allah wills). I imagine holding her hand, coming home to her, building a life on the Shariah, spending time together, praying together. Because of that I sometimes open Instagram or YouTube and watch couple reels or Muslim couples, and one click turns into hours of scrolling. I finish feeling worse and more empty. I make dua, and sometimes pray tahajjud asking Allah for patience, strength, and to redirect my thoughts, but the day after the same fantasies come back like my mind is stuck on repeat. It’s affecting my daily routine and studies - I don’t feel like moving or focusing. How did you brothers deal with this while staying away from haram? What practical steps, duas, routines, or mindset changes helped you before nikah? Any realistic tips for managing the loneliness and keeping productive would be really appreciated. JazakAllahu khairan.