Deontay Wilder Vs Anthony Joshua iframe not printing?

So for the sake of practice I took a link from the youtube iframe of a promo of the two famous boxers. And, it didnt show, it should the very first video that I attached from my own youtube channel.

Why didnt the promo show at my website, is it because of copy right related things?

Without sharing a link to your actual code, it is very difficult to guess what the problem is.

Cant link anything because freecodecamp does not allow me to post any link. Very handy especially if you are a begineer.