Personally it's one btrfs partition with subvolumes for root and home, previously i had a separate home with ext4 (it's always better to have a separate home)
I can't delete files in my old ntfs partition from when I had windows. [fedora, kde plasma] {EDIT: I messed up}
Try ntfsfix commandlsblkThis command will list your drives find the ntfs partition it will be something like: /dev/sda1 Then run ntfsfix on that partition as root sudo ntfsfix /dev/sda1 If you still boot windows you should disable fast startup it can cause this issue, Good luck!
Now nixos