Mac haywire after trying to clean install

SOLVED:

In terminal i typed:

diskutil list

this displays all the HD stuff

then typed:

diskutil apfs deleteContainer disk0s1 disk0s3

(disk0s3 was the volume of the partition i recognized by its size)

Then i went into the disk utlility app which now let me formate the drive to FAT32

THEN i opened bootcamp which finally offered to restore the partitions into one drive.

It worked, not sure why.

Feels like the tech equivalent of Bambi stumbling into a triple axel but here we are.

It's been a ride

Seems I followed some bad instructions as I thought I'd just run the installer without erasing Big Sur first.

After erasing the main HD from recovery and reinstalling Mojave everything is fine, with the huge exception that I'm still not able to do anything about my ex Bootcamp Drive. Can't resize it, clean installing didn't erase the partitioning. I can still use the space but with a tiny 250gb drive having two partitions is a hassle.

I've read someone saying you should reinstall windows and then remove it the correct way, but Bootcamp Assistant will only let me install making yet another partition from my main MacHD so I'm going nowhere near that.

Isn't there some way I can just physically nuke the whole drive and start over?

I know there's a right way to reverse a bootcamp partitioning but I'm going to say if making the mistake of trying to erase your partition the "regular" way is going to leave you with a split drive for eternity I think this maybe should have been communicated a bit more clearly. Feels like an honest mistake.