>>107566358
Just add something like:
modprobe.blacklist=nouveau rd.driver.blacklist=nouveau
to your grub config and re-generate it.
You need both to blacklist it properly at least this was the case when I used Nvidia years ago.
https://stackoverflow.com/questions/63103652/differences-between-modprobe-blacklist-and-rd-driver-blacklist-in-linux-kernel-p