Photo cropping is hard

It’s really not. Try harder.

If you’re using plasma you can just do meta+shift+print screen or meta+r to screenshot a region

Check out lightshot. Very easy to use.

I don’t know how your KDE is set up, but on mine the screenshot app (Spectacle) pops up when I press the PrintScr key. From there I can easily capture the whole screen, a rectangular region, a window, etc. It’s like click, drag, click.

Get an app called flameshot

Admit it, you just wanted people to notice your Plasma.