If you want extensive lore, there's nothing better than https://uesp.net.
No videos, but thousands of pages of lore at your finger tips. Most of it is concise enough to read, and if you want to lose yourself for a day or month, you surely can. The rabbit holes get deep thanks to links.
Run by fans for fans, I wouldn't be one bit surprised if the devs at Zenimax and Bethesda go there to research their own lore.
Here is a list of the ones I enjoy most. Enjoy...
Lady of Scrolls
The Exploring Series (Exploring Elder Scrolls)
ESO - (They are just a streamer and not a part of ZoS)
I recommend any of these Tamrielians for their lore knowledge.
Hope this helps....
PS... I apologize if I missed anyone..