Nowadays to use youtube efficiently with ADHD, you practically need all of:

(a) uBlock - this one is debatable but deals with the worst distractions especially if you're trying to learn from a video your professor put up and you have an exam to prepare for, (b) unhook - hides most of the "recommendations" that attempt to keep you on the site because you're planning to do the copmprehension questions your professor gave you for after the video, (c) something to disable "autoplay next" for the same reason as above (a uBlock rule will do it), (d) no translation. Soon we'll probably need (e) something to block AI.