by stevepusser » 2020-10-06 01:22
Debian does not ship that nonfree firmware package by default, so if you didn't go out of your way to get the special ISO which includes it, or follow the instructions in the Debian wiki to install it, you don't have it.
Elementary and many other Debian derivatives include it by default so they work OOTB. This is one of the more frequently asked and answered questions here and on the Debian subreddit, so you must not have searched for "7260" and/or "iwlwifi" at all.
Enjoy Elementary!
MX Linux packager and developer