Since 3 days ago website is not scrapable and auto added image size in the slug

I have a blogsite and after each post I will use other sites like pinterest to pin an image from my post. Since the 22-23th of July these sites don’t recognize images on my site. And what I noticed, all of a sudden 50% of my images automatically added the image-size at the end of the slug. Even from older posts.

-I already checked which plugin was updated after the 22nd but can’t find any related to this. -Last backup was made on the 20nd, I really don’t want to lose the data I made in these days.

Anyone have an idea what the issue is?