I can't install updates using the program in the menu

[Artim]

In the software manager under "Other Sources," uncheck the boxes for:

http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu focal InRelease
http://ppa.launchpad.net/ulatencyd/stable/ubuntu focal InRelease
http://ppa.launchpad.net/lucioc/sayonara/ubuntu focal Release
http://ppa.launchpad.net/ulatencyd/stable/ubuntu focal Release
http://ppa.launchpad.net/lucioc/sayonara/ubuntu focal Release
http://ppa.launchpad.net/ulatencyd/stable/ubuntu focal Release
https://dl.winehq.org/wine-builds/ubuntu groovy
https://dl.winehq.org/wine-builds/ubuntu groovy InRelease

Then refresh and try again. It should update just fine after that.

I'm disappointed to see all these PPAs in Linux Lite. I thought the new Series was going to do away with so many PPAs.