Redmi K40 game launched without Google services. Xiaomi explained that it helps optimize the maximum for a gaming device as K40G. But facing the inescapable needs of users and the major constraints when there is no Google services. Xiaomi had to include Google Play Services in K40G from version V12.5.5.0
Instructions to upgrade to version V12.5.5.0.RKJCNXM or higher
Go to Settings - My device - MIUI version
Check if it's the latest version or above V12.5.5.0? If not, click Update to update to the latest version. (Remember to connect to wifi)
Instructions to update Play Store from Get App
Go to Get App - in search, type Google - Find Google Play Store and click Update
Enjoy Google Services (include Play Store) now
Guide Redmi K40 Gaming / Pocophone F3 GT