Macintosh HD not using entire drive
I just needed to resize the container (because apparently that's a simple thing to do). I first had to restart into recovery mode and run firstaid on the container. I ran it on all 3 of the drive, the container, and the volume to be safe, but I'm certain only the run on the container did anything. Then I restarted and logged in and in a terminal ran the following:

diskutil apfs resizeContainer /dev/disk1 0