I have a Lenovo laptop. I don't know the model number of the laptop so I can't tell you the exact wifi device model number. Sorry about that.
But when I tried to install Debian Buster from the non-free net installer with non-free firmware 10.2 from the website, the installer is asking me to load from a USB stick where iwlwifi-8000c- from 22.ucode to 33.ucode files are kept.
Can anyone tell me what should I do now? And why the net installer is asking for these files when the net installer already should have these files?
I also tried installing from regular Debian Buster 10.2 net installer and the same problem persists.