I had to install Windows, but I was already using Debian 12.
I installed it in a different driver to make sure, it just wiped my EFI partition from the other driver.
Then I booted on a live USB to reinstall GRUB, everything was fine, but then Windows Boot Manager got erased.
After trying a few times, I just decided to wipe all my drivers, install Windows first, then Linux, now my GRUB is fine with both.
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