Mintcast, for one. Used to be mostly about Mint, but now is broadly about Linux. https://mintcast.org/ (The site linked above also has a titled episode archive of shows. In addition, all shows back to #163 (2012) are stashed at https://archive.org/details/@mintcast … hover over each show’s slot to see a list of topics covered )

Distrohoppers (monthly) https://distrohoppersdigest.org/

Linux Unplugged

It isn’t weekly, but Linux Prepper podcast about foss and Linux might interest you.