on android i used to go pretty extreme and edit hosts file on a rooted phone. you can find maintained lists for it they just zero out the address. for security

on android i used to go pretty extreme and edit hosts file on a rooted phone. you can find maintained lists for it they just zero out the address. for security i would also make all the edits i wanted for different things and then unroot. for firefox there is also script blocker with the ability to white list adresses also remove history on close.