This article explains how to block pop-ups on Android using Incognito mode via Google Chrome, Mozilla Firefox, Samsung Internet and Opera browser on all smartphones and tablets running Android 7 (Nougat) or later, unless otherwise stated.
How to Block Pop-Up Ads on Android Phone
If Chrome is your preferred browser, you can block pop-up ads through Chrome settings.
Tap the menu icon (the three vertical dots to the right of the address bar).
Tap Pop-ups & Redirects.