You can change the magnification method. There are three ways to zoom in on the screen: Magnify the full screen, magnify part of the screen, and switch between full and partial screen.
Setting method:
realme UI 3.0 and above version: Settings > Search "Accessibility" in the settings > Vision > Magnification > Magnification type
realme UI 2.0 & 1.0: Not supported
realme UI R & Go & U & S & T Edition: Not supported