Debian is a free operating system (OS) for your computer. An operating system is the set of basic programs and utilities that make your computer run. Debian provides more than a pure OS: it comes with over 59000 packages, precompiled software bundled up in a nice format for easy installation on your machine.
My laptop is an Acer A515-51-30C9 CPU: Intel Core I3-7020U GPU: Intel HD Graphics 620 OS: Debian 12 with MATE
Install firmware-atheros package to get rid of the firmware errors. The x509 stuff is a known thing with older Acers. If you have secure boot enabled, you can turn it off to see if it goes away, it's harmless otherwise.
it seems i have firmware-atheros installed, and i have secure boot disabled. So if it's harmless, is there a way to hide those messages. Thanks for answering