Ask HN: How to improve focus and reduce distractions?

I don't want to pin it on social media, but of late I'm losing the ability to focus attention on a single task. I find constantly distracted, erratic, and shifting between apps, opening instagram, etc. I tried looking for solutions online but suggestions like 'delete instagram' didn't work. I'm just replacing it with something else. Did anyone face this issue? How do you resolve it?