Where can I get the back glass of my Samsung Galaxy S10+ replaced? (I don't mind a rip-off back cover.)

Same as title. The back glass of my Samsung Galaxy S10+ is shattered. I have to stretch out using this phone for atleast a year, so I thought I'd get it fixed. My max budget is 4k. As I mentioned, the back glass doesn't have to be official, or even glass for that matter. It can be a plastic back panel. Please help me out with some mobile repair shop to get the servicing done.