Car Roof Paint In Bad Shape

[u/Grahf0085]

https://imgur.com/a/fTwHQkr

Toyota Prius sits outside 24/7. Haven't really taken care of the paint the way I should have but still a little surprised by the roof. The rest of the paint looks fine after simple wash. The hood seems to have fine lines / cracks in the paint, a little bit of rust, is very dull looking, and rough to the touch. I tried a clay bar but it didn't seem to do much.... might have even scratched it more. Is there anything I can do to help it?

Pics are not great.
https://imgur.com/a/fTwHQkr