Installing problem

1. if your country is set from russia, ukraine or belarus, it is impossible to download it; try switch the country in play store (note you can only switch once every year, and will take 2 days to complete)
2. try switching your country into another country in phone settings then reopen the store again
3. install apk from third-party apps or through web
4. where is your country?

if your country isn't appears from above I mentioned, it may be:

1. your country has been requested to remove the game due to the policy app management
2. due to google play services that the game was avoided, temporary or forever banned on your country; only supported on certain devices
3. your phone need to update the latest software version
4. due to huawei brand that was banned all of the google services
5. due to conflict security