Are there solutions to block pornography on iOS and watchOS? I need an effective solution for preventing my ability to see porn and immodest content on both my iPhone 11 Pro Max and iWatch 5 cellular. 

Once that is accomplished:


I do want to otherwise  retain maximum functionality on these devices. 
Also this solution needs to have Some measure of uninstall protection


What software or service can help with this content blocking?
On iOS there is a setting for "Content and Privacy Restrictions Go to Settings -> Screen Time ->  Content &amp; Privacy Restrictions.  Under this setting, there are many types of content restrictions which you can apply. 

Many browsers also have content restrictions.