I finally did it.
I bit the bullet and downloaded TikTok.
And, within minutes, I was hooked.

Thankfully, it appears the solution to this problem may be close at hand:
NEW!
This will be accessible in the apps parameters andwill be available for seven days.
40% off TNW Conference!

This wasnt what I wanted on my feed, so I didnt like the posts.
The videos were lost in the ether.
In this case, a Watch History function wouldve been ideal.
I do hope TikTok makes it more than just a simple list though.