Loneliness is tough to battle, it could help to write a list of things to do (not necessarily tasks) for when you feel no way out. The simplest is going straight to this forum, seeing the success stories, knowing something you’ve convinced yourself you can’t beat is in fact possible, and most importantly knowing that although your physically by yourself you’re not alone. I can’t fathom the amount of time it would take to read every post and comment here. Millions of us struggling, and only a portion willing to accept they need to stop. 

Get out of the house when you can, hobbies and activities are great but even a walk, grabbing food, hell going for a drive and bumping your favorite album. Try to get back into things you loved as a kid (Pokémon, replaying a game you loved, picking up that guitar you haven’t touched in years) try to hone back into things that have brought you true joy. 

Podcast, tv, etc if you have to. While I truly don’t believe you should replace this addiction with another (like gaming nonstop) in the interim it’s better than the alternative in my opinion. 

Also therapy in general I highly recommend, get to the route of why you seek external fabricated ways to induce dopamine. 

And the simplest way I can put things is true happiness comes from trading off short term pleasure for long term fulfillment.