Rich Content on mobile

I am having a problem with using photos inside of rich content on mobile. No matter what format for the photo I select, it still comes out huge on mobile and distorts the whole screen? Is there a way to adjust the photo size of rich content per each breakpoint or is there a setting somewhere else I’m missing?

You can not adjust image sizes for breakpoints, but shrinking to the mobile screen size should happen automatically. Do you have any screenshots/links?