Hey, it's my specialty! Have you looked into getting a dumbphone? It really helps a lot. There are ones that can be acquired for as little as $30. If your addiction is mostly on your phone, this can definitely help you:
https://josebriones.org/dumbphone-finder

I switched to a dumbphone at one point, and it helped me a LOT. I ended up switching back because I needed certain apps, but the "detox" for a few months using a crappy little flip phone definitely helped me. Of course, if your addiction ends up just transferring to a computer, that might be problematic...