I believe the answer lies with self discipline, denpabro. That and distain for the site as a whole. At least that is what stops me from using it. You say that you hate it, op, and that it doesn't make you feel good yet you still scroll through it, and to me at least this seems like a you problem rather than the site itself (which is a steaming pile of shit by the way, and always has been since its beginning)

You wrote that you dealt with Twitter by blocking it and you could block Reddit too, however does this address your tendency to doomscroll? Won't you go do it on the next social media platform? Instead you could try to resist temptation to visit these places and each time you resist you can reflect on your based discipline and self control.