Debian does not ship the AAC codec, due to legal quagmire surrounding the necessary code. The same probably goes for Ubuntu. That might be the cause of at least

Debian does not ship the AAC codec, due to legal quagmire surrounding the necessary code. The same probably goes for Ubuntu. That might be the cause of at least some of your problems. https://tookmund.com/2024/02/aac-and-debian https://tookmund.com/2024/02/aac-and-debian