Maybe just commit to removing the most attention-grabbing apps from your phone? Seems like a good way to keep the aspects of your phone that you value while getting rid of the ones that you don't.
Yeah a time schedule or a really long and cumbersome unlock password for social media and web browser would really help. But then you need that recipe for dinner and you think "this is stupid, I'm an adult, I can handle this" and you remove it.
This was my experience - after removing apps / block there would be an initial period where I would stick to it, but eventually would fall back to the same old routine. Changing engrained habits is extremely difficult.