1. Search the required software through the software store in your mobile phone and download and install it.
2. Search for the required software download and installation through the mobile phone browser (if you have your own browser, the downloaded installation package is saved in my file-download folder).
3. Download and install the required programs through the third-party assistant software.
4. Download the installation package in APK format through the computer, and then transfer it to the mobile phone for installation.
This answer applies to all OPPO models.