I've installed and uninstalled reddit maybe 7 times in the last year, and even when I don't have it installed I still visit it from my browser.
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.