Please read all of the steps in this Adobe Help page:
One reason we see here in the forums is that folks have used the wrong unit of measurement accidentally, for instance, and have a file much larger than they thought. We can't see that information in your screenshots.
Have you tried unchecking the drive with the smaller diskspace so only the larger is seen ?
Tried that. Didn't help. i think something was weird with my hard drive
Then try running Disk First Aid on your drive (Disk Utility). Any difference?
Ended up closing without saving and it gave me a long paragraph (sorry didn't sc) about how one of my disks was corrupt. Guessing the hard drive was disconnected at some point and it wasn't reading properly so couldn't use that?