Is It Legal To Imbed Youtube Videos On Your Site?

I am working on the landing page of the curriculum. However, I have been wanting to respect and honor the copyright laws and stay in the ‘legal’ zone. Is it legal to imbed youtube videos onto your site if it has a copy link? Thank you.

It is legal on most sites.

So, I did look up some sites where it says if there is an ‘imbed’ option on youtube you legally imbed it on your website. However, when I go to do so I get this error,

"Blocked by X-Frame-Options Policy

An error occurred during a connection to www.youtube.com.

Firefox prevented this page from loading in this context because the page has an X-Frame-Options policy that disallows it."