Software downloaded from within the app can be installed through the authorization settings.
Setting method:
realme UI 7.0 & 6.0 & 5.0: Settings > Security and privacy > More security and privacy > Installation sources > Turn on the corresponding application switch to install the app.
realme UI 4.0 & 3.0: Settings > Password & Security > System security > Installation sources > Turn on the corresponding application switch to install the app.
realme UI 2.0: Settings > Security > Unknown source installations > Turn on the corresponding application switch to install the app.
realme UI R & Go & S & T & U Edition: Settings > Apps & notifications/Apps > Special app access > Install unknown apps > Turn on the corresponding application switch to install the app.