facebook image really little

I use this code for facebook videos: <iframe src="https://www.facebook.com/video/embed?video_id=696716713724134&wmode=opaque" width="450" height="280px"></iframe>

This is the image result: https://www.debutgoal.com/wp-content/uploads/2014/05/rewre31.jpg

I must say it’s happaning only in Facebook videos, rest od the video providers works perfect.

Any fix to that?
Thank you so much.

https://www.ads-software.com/plugins/video-thumbnails/