Use alternative frontends

Instead of YouTube, you can use one of the many Invidious instances such as yewtu.be in your browser or the FreeTubeAndroid app. This way you can avoid advertising and protect your privacy at the same time. You can also install LibRedirect for FireFox. This plugin automatically redirects you to an alternative frontend when surfing the internet. Large companies such as YouTube go to great lengths to make alternative frontends unusable or block them again and again. Don't give up if it doesn't work on the first try!