Modern smartphones already give you the tools to stop abusing your phone’s dominance of your attention. Screen time and other similar controls let you limit your usage of distracting apps. Or just don’t install them and learn some self control. Put your phone in your bag instead of your pocket, or maybe leave it at home sometimes. A black and white phone missing basic features compared to a modern Nokia feature phone…
For my Firefox desktop I have written 5 extensions that blocks websites in various ways so to help me control my bad urges, but even then I just open up safari and use it from there.
Fact is just I can't control it, and I am willing to pay thousands of dollars for any solution that solves these problems without limiting the use of technology I actually want in my life.