It really is insane. I deleted Instagram too, but so many other apps have the exact same formula, like YouTube and Reddit. All you can do is repeatedly delete these apps, and journal or read to keep them at bay. I bought a notebook for tricky Spanish verbs, and I've got another one for Jazz music theory. I am terrible at Spanish AND Jazz, but it helps me stay off my phone, and when I am doomscrolling, I make an effort to change course, look up something I'm really curious about and write it down. Hope that helps literally anyone.