How can I remove ads in YouTube or other websites when using Firefox?
One of the best options probably is AdBlockand AdBlock Video
However, keep in mind that blocking ads also means that you stop supporting the creators of the content you are regularly using or watching as it mostly is their only source of revenue.
You should consider making exceptions for sites or YouTube channels you are regularly visiting.
apologies, the first is for Chrome - for Firefox I believe it's Adblock Plus
thanks for useful suggestion . n idea.