In some device launchers, you can unhide apps by going to Home Screen Settings > Hide apps and removing the Play Store from the hidden list. Google App Store UK: Manual Install & Free Download
If your device does not have the store (such as some older Huawei models or Amazon Fire tablets), you can manually sideload the (Android Package) file. Google Play services - Apps on Google Play google app store uk install free download
Go to Settings > Apps (or App Manager ). Locate "Google Play Store" and ensure it is set to Enabled . In some device launchers, you can unhide apps
Before attempting a fresh , check if the app is simply hidden or disabled on your device: In some device launchers