The error your log shows is a duplicate of bug 2110338
You should remove the 470 driver before attempting to install a newer version:
sudo apt purge *470*
** Changed in: nvidia-graphics-drivers-470 (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/2117531
Title:
package nvidia-dkms-470 (not installed) failed to install/upgrade: il
sottoprocesso installato pacchetto nvidia-dkms-470 script post-
installation ha restituito lo stato di errore 10
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