Sony Xperia devices run on Android Open Source Project (AOSP) with proprietary Sony customizations. Normally, Google Mobile Services (GMS), including the Play Store, is preloaded. However, advanced users who flash Generic European (Customized UK/DE) firmware or install LineageOS may lose GMS. Additionally, malware or accidental adb commands can remove the Play Store. In such cases, sideloading the Play Store APK becomes necessary.
Before attempting manual installation, verify: download play store apk for sony xperia
This is where many users get confused. When you search for "Google Play Store" on an APK site, you will see dozens of versions. Which one is right for your Sony Xperia? Sony Xperia devices run on Android Open Source