How to recover 70GB I lost after removing Windows 10

I had a Windows 10 install in a partition of 70GB. I removed it through boot camp assistant but now I have list the 70GB, how can I restore it?

My disk is 500GB but the space in macOS is listed as 430GB so the 70GB is lost, as you can see here:

This is the output from diskutil list

The Microsoft Basic Data GPU 30.4 MB  disk0s3 is a small bootable disk because I am trying to get an eGPU working. FYI.

Some other output from commands I've seen requested:

diskutil cs list

No CoreStorage logical volume groups found

sudo fdisk /dev/disk0

sudo gpt -vv -r show /dev/disk0

And here's how my storage info looks for good measure:

And my device:

I will try to provide any info more that is needed. I am forever grateful if someone can help me deal with this.