Behavior/ Appearance gap between ios/android

I have built an application for android/ios.
Currently performing an UI test and have found differences on the behavior and appearance of the application.
apart from the example on the attached images(when element is selected all get blue line in android and only 1 item get blue line in ios), I have also found that some “go back” buttons disappear on iOS but work fine on android.

Is there a best practice to address this changes???