Hello,
With that rank in TS PGECET, you cannot get a seat in any colleges. Which accept TS PGECET score. Actually your rank is very high for admission. So please go for some good private engineering colleges in Hyderabad for Mtech. Here's a list of them
https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/colleges/list-of-me-mtech-colleges-in-hyderabad&ved=2ahUKEwil3dyDwYzjAhVBLI8KHehWCAoQFjACegQIBBAB&usg=AOvVaw2QT0cNi4zDe-nnM2SWpSYx

Hope it helps
Thank you!