First question on this Japanese sub-community. Sorry if this confusing or hard to explain. Basically, I want to say
Everyone should realize that if the YouTube thumbnail wasn't a picture of an anime girl, there wouldn't be 1 million views.
but get stuck on "that if". I'm not sure whether to nominalize the conditional part before adding in 気がつく (realize), or something else. Wasn't sure where to put the "realize" phrase, but here was my best shot: