Let me know in this thread if you find a solution, as I seem to be fighting with the exact same problem.
I installed the drivers according to instructions (not sure if it were exactly the same steps as you, but looks somewhat familiar), no errors detected, but nvidia-smi gives similar output after a reboot.
I wouldn’t have guessed it might have something to do with e.g. secure boot, which I have enabled because I have also Windows 11 running on this laptop (I think Win11 requires it by default). I suspected the problem might be this laptop having both Intel HD and NVidia GPUs, and that somehow messing up the installation. E.g. lspci | grep -e VGA listed the Intel HD graphics chipset for me, not the Geforce GPU.
I think I used these instructions:
There also seems to be some discussion on this forum: