I turned out perfectly fine without a phone until age 15, and I'm 17 now, I don't really use social media other than reddit, Lemmy and YouTube on my phone and I barely use it, since I'm more likely to use my iPad at home exclusively.
I feel as though more parents need to do the same mine did, restrict access to smartphones until ages the kid is more likely to explore the world more, specifically for safety, but still teach them to concentrate on stops while on public transport, on where they walk, etc. and not use their phone on the go apart from when time is able to pass and be stationary.
I cringe at the fact kids a third or less my age are allowed phones, I shouldn't even be allowed since my brain is still developing, i cant imagine the levels of braindead these children will be when they get to my age, since people my age are already horrific enough...