I also spent a while looking on YouTube for videos about Wales and in Welsh in order to see what came up with various search terms. No one really seems to be making videos in Welsh, which is hardly surprising, but I do need to improve my video making skills before trying to publicise mine. But I did stumble on this video of a couple exploring a ruin near Llanystumdwy.
Believe it or not, it's currently for sale for £500,000! It went on the market around 9 months ago. It hasn't sold yet. I wonder why?