where do I find ad blocker

You can install an extension.

In Firefox, click extension icon - manage extension - search it

For example https://addons.mozilla.org/en-US/firefox/search/?q=blocker

I tried to paste "https://addons.mozilla.org/en-US/firefox/search/?q=blocker" into the search. I still after opening 10 tabs searching this and that. signing in 10 times with 10 new email codes and I still can not find ad blocker. I think I allowed Fox business to to disable ad blocker for them. I do not want to permit to do anything. I needeto find ad blocker. I tried all sync, extensions and everywhere Mozilla said to try and can't find it. From my search no one else can either???

https://support.mozilla.org/en-US/user/bhagrechhorionion/