It can be a lot easier to keep topics separate to prevent confusion and cross-referencing.
You can create new threads for each issue and this can keep everything organized and easier to follow.
For your first issue:
ChatGPT can be a helpful tool, but it cannot be considered reliable enough to trust with terminal commands. It consolidates information and can give outdated information while sounding very confident.
The app store contains multiple package formats. You can check the source of a package you have installed by going to its page and then clicking the source button on the top titlebar or by scrolling to the bottom of the page.
The sources of Flatpak and Snap are alternative sandboxed formats and they can be isolated from the system, restricting its access to essential system files.
Please check if your audio filter is installed as a Snap or a Flatpak.