Pro tip: clean YouTube links. When you get a link from YT, it includes an ID tracking back to YOU. It's a "query string" on the end of the URL like this:

...?si=[tracker_ID_here]

This ID allows YouTube (and their owner, Google, and *their* owner, Alphabet, and ALL of their associates) to track the people who click on the link, and the apps they used, back to you, building a network of none-of-their-business.

Good news: DELETE the "?si=..." part & the link works just fine without the tracking.

@VisualStuart can you just click the arrow and then copy link, and share that?
@natureshelperokanaganhighlands Yes, and (if you are logged into YouTube on the website or using a mobile app) it will include the query string. It will work, and it will include tracking when people click on it.
@VisualStuart there is a short string, but you say it is actually that custom link that leads to my id, then?
How do I get around it then, just go to the address bar and copy the string, then delete everything after the ??
@natureshelperokanaganhighlands Look for the Share button near the bottom of this screenshot.
@VisualStuart that is what I do, click the arrow, go to link, hit copy...