Before attempting any colour work, it goes without saying that you need to do the blur.
https://www.damiensymonds.net/2010/06/blurring-background-false-dof.html
Well, the first step is for me to take a look at one of the "blurry" files, and one of the "good" ones. Please send them to me via https://spaces.hightail.com/uplink/BellePhotography
This is still very very very very very very very very bad. You're darned lucky your computer even starts up properly.
Brian says you should have at least 1/3rd of your C drive free.
You MUST start clearing up space. Don't do any other editing until you have done so. You're in very dangerous territory.
This is better, but still not the 1/3rd that Brian recommends.
Do you literally mean Place?