It sounds like you are having trouble downloading and installing APK files on your phone. Here are a few things you can try to troubleshoot the issue:
Check your device storage: Make sure that your device has enough storage space available to download and install the APK file. If your device's storage is full, you may encounter errors when trying to install an APK.
Enable app installations from unknown sources: By default, Android devices are set to only allow app installations from the Google Play Store. You may need to enable app installations from unknown sources to install APK files. To do this, go to your device's Settings, select "Security", and enable "Unknown sources".
Clear cache and data: Try clearing the cache and data of the browser you are using to download the APK file. This can help resolve any issues with the browser's cache or settings.
Try a different browser: If you are having trouble downloading the APK file with one browser, try using a different browser to see if the issue persists.
Check the APK file: Make sure that the APK file you are trying to install is not corrupted or damaged. You can try downloading the file from a different source to see if the issue is with the file itself.
Update your device: Make sure that your device is up to date with the latest software updates. This can help resolve any compatibility issues with the APK file.
If none of these solutions work, it may be worth contacting the developer of the APK file or seeking assistance from a technical support professional.