Videos are too small on desktop

Hello,

When I add a link video through the left panel, the "Add Video" option, the video appears too small.  Hopefully, this is easily fixed through some settings, but I can't find it.  I'm using the york template.  I made this site years ago, and all pages are like this.  I want to avoid redoing everything with video blocks, but if that is the only way, so be it. 

Thanks

You mean video on left or right side small? If right, can you share link to page? I think we can use some code to make it larger