Go to > Apps > Special app access > Install unknown apps .
If you cannot access the Play Store, you can download the APK from reputable third-party sites like Uptodown . Be cautious, as downloading "free" versions of paid APKs from unverified sources often contains malware. Enable Unknown Sources : Download MXPlayer Pro apk
: Uses the HW+ decoder for smoother high-resolution playback. Go to > Apps > Special app access > Install unknown apps