I have two bootcamp partitions but not my original 500GB
You now have a broken disklayout with broken filesystems on it.  That is not a good thing at all.

I would suggest booting into rescue mode on the mac, erase the whole disk and (may not be necessary) set a single partition on it.  Then reinstall MacOS to that, restore your time machine backup, and then start a fresh time machine backup so you have that functional.  Then use boot camp again to reinstall a supported version of Windows next to MacOS.

Word of warning:  I tried using the native Windows tools to restore a Windows installation on my Mac a good while back.  It did not respect the partition layout but scratched the whole disk including my MacOS partition.  I only did that once.