Answer 1

Google and YouTube don't allow to access their website from iframe

Answer 2

.Osama Deep.

Add proper source in iframe then it will works

visit this link,
https://stackoverflow.com/questions/11914491/amazon-products-dont-show-up-in-iframes

for embedding YouTube videos ,
visit this link,
https://www.w3schools.com/html/html_youtube.asp

For embedding google maps

<iframe width="100%" height="422" frameborder="0" scrolling="no" id="mapsgoogle" marginheight="0" marginwidth="0" src="https://maps.google.com/maps?width=100%25&amp;height=420&amp;hl=en&amp;q=Delhi+(Gurugram)&amp;t=k&amp;z=14&amp;ie=UTF8&amp;iwloc=B&amp;output=embed"></iframe>

For embedding Bing search engine in iframe

<iframe width="100%" height="422" frameborder="0" src="https://bing.com"></iframe>