OpenGL or Vulkan (Vulkan is usually faster on newer phones).
PPSSPP (PlayStation Portable Simulator Suitable for Many Platforms) is a free and open-source emulator that allows you to play PSP games on various platforms, including Android, iOS, and PC. The emulator is highly compatible with a wide range of PSP games, including Hitman 3. OpenGL or Vulkan (Vulkan is usually faster on newer phones)
Alternative: Purchase Hitman: Blood Money or Hitman 2 via the Google Play Store (these are native Android ports, not PSP ISOs). not PSP ISOs).