Help! Site design ruined

I downloaded the plugin and did a bulk smush, and while it was smushing, after about 25 images were smushed, I refreshed myhomepage on another tab and found my website design all over the place. The styling has been completely corrupted as the nav bar is now just a list and there’s images that aren’t loading, overlapping blocks, and it just looks horrible!

https://wordpress.org/plugins/wp-smushit/