You can watch YouTube in DuckDuckGo to the same effect as you mentioned in the description. A boring answer is that you can install basically anything if you can get access to cmd, power shell, or terminal. You can also install almost anything to user space instead of for all users. On Mac, this is kind of a hidden feature now, but you can make a ~/Applications folder and put apps in there. Generally, if you ask IT, they can be helpful. "Hey, I need uBlock Origin so I waste less of my time at work." isn't going to make anyone blink twice.