You must own the original PS3 game disc and "dump" its files to your PC to use them legally with the emulator.
You can play the game natively on PS3 or through the remastered collection on PS4 and PS5. Game Statistics & Facts (Remastered Version) Uncharted 1/2/3 on PC Using RPCS 3 Best Settings uncharted-3-drake-s-deception-pc-game-free-download
The primary way players experience Uncharted 3 on PC is through the RPCS3 PlayStation 3 emulator . You must own the original PS3 game disc