HOW TO PUT ADVERTISING ON THE SITE?

Question

contextual advertising

I have a website, it's almost empty, I want to put an ad so that when a person presses a button and a video with an ad opens, they pay me for watching the video. What is the name of the service where to get this ad?

Answer 1

Can you elaborate on which button the user will press, why the site is "almost empty" and is there any traffic?
It’s just that if there is no traffic on the site, then ad networks may not connect video ads.