No Amazon in your country makes recommending hardware difficult. I suggest you do a bit of browsing on your local hardware websites to find some PSUs in your price range, then post a list and we can suggest which to consider further and which to avoid.
I also strongly suggest consulting the
PSU tier list which ranks PSUs by their performance and build quality. It is not authoritative, but is a very useful reference.
My personal recommendation would be a Corsair RM 750W. While all the other divisions of Corsair are competing with each other to see which can put the most RGB into things, their PSU division simply keeps churning out great products year after year - thanks to a large degree to the the fact they hired John Gerow aka Jonnyguru, the man who almost single-handedly made proper PSU testing a thing, as their Director of R&D.