A self-professed student of spirituality and ancient Sanatan Dharma, Kshatriya by birth; I devote much of my time and energy in researching spirituality and Hinduism in a practical manner to promulgate it to the world
I think I have botched this up more than once myself, though in theory it is trivial. You open the video, click on "Share", and you copy/share the link you get there.
For example, a video I was just watching (note the common open.lbry.com prefix): https://open.lbry.com/@Bombards_Body_Language:f/Body-Language---Dominic-Cummings---The-Media-Hysteria:5
This link should be runnable in a browser, but if you run the lbry app, I am not sure how you are supposed to open it. What I do is search for the stuff after the last slash in url.