Use a browser with built-in ad blocking, such as Brave or Firefox with an ad-blocking extension
Install a trusted ad blocker app from the Google Play Store
Enable Private DNS and set it to an ad-blocking DNS provider
Turn on ad blocking in your browser settings if available
Disable personalized ads in Android settings
Block app notifications from apps that show ads
Remove apps that display too many ads
Use a firewall app to block internet access for specific apps
Keep Android and apps updated
Avoid installing apps from unknown sources