It took hard work to get there. I use Nextdns to block domains of websites and apps when I realize I spend too much time on them. Could I just allowlist domains, sure, and sometimes I do that when I need to look at something on Reddit for instance. But it's easy to just not cheat.
I stopped checking news sites at all and it's been an absolute blessing. Very little that's in the news actually matters to me or my family. Even the publicly funded media is full of clickbait and sensationalism, just not worth it.
I use local public radio to stay somewhat informed about things I should know, legislation for example that's relevant to us. Radio works because it's a limited resource so at least in my case, the signal to noise ratio is acceptable there, at least every now and then.
I've been doing that for a little while now and I feel much happier. I use my phone much less frequently and for less time now. I love it.