I've looked seriously into doing this, and there are just too many situations where I'm expected to have access to a particular app or website on my phone in day to day life. Maps are also a killer feature, and I use instagram messaging with some friends here (expats with unstable phone numbers).

The best I've had was to turn my phone greyscale, which really helped me cut back on any short form video consumption, but my endless reddit scrolling is still there.