dual-booting installation troubles

hello,
I successfully installed bazzite the first time as dual(triple) boot to see if the one game i still need windows for can work there, but i did not allocate enough space in the partition for the game (off by 2gb...), so i wanted to reinstall bazzite: delete boot and system partition and reboot to usb.
i tried this twice and i get the same message.
pls help