How can I change an ugly URL to an SEO-friendly URL in PHP?

Hey,

I develop a website from the developer but it doesn’t change my URLs. Now my URL is “?id=46” & it does not look like a professional and friendly URL according to SEO.

Can anybody know how to change it from an ugly URL to an SEO-friendly URL?
Should I contact to again developer or I can do it myself?
My website link: https://repairinuae.com/