Which are you trying to play on your Redmi 9A? Are you experiencing lag, app crashes, or overheating ? What exact sub-version of MIUI 12 is your phone running? Share public link
If your device supports it, you can typically find Game Turbo in one of two locations: game turbo redmi 9a miui 12
Open the stock application pre-installed on your Redmi 9A. Scroll down to the Common Features or Tools section. Tap on Game Turbo . Which are you trying to play on your Redmi 9A