Major audio/mic issues on PC?

Hello,

I've been encountering annoying issues with my PC. I have multiple sound devices including 3 different microphones (2 of which are connected to a headset), 2 headsets, a speaker and the TV. Im a music producer so it's very annoying that there is this wall blocking me from moving forward.

The issues with the audio is:

There are 4 audio output devices, and the PC only registers 1 of them. The pc registers 2 separate devices as if they were in the same audio jack, and therefore they play mutually exclusive. That means I can't switch between audio unless I unplug the headphones, and then it will play out of my speaker. I've had this issue before and I forgot how I overcame it.

The issue with the microphones is there are 3 recording devices, and the audio is fuzzy and you can hear static regardless of what quality microphone I have attached. It also records everything playing through my headphones, meaning I can't single out the vocals from the audio.

In short, I need answers to explain:

how to play sound from multiple devices at different audio jacks and locate them on the computer

how to record audio with good quality

how to record audio over a song without the song in the background of the vocals so i can add it in as a singular instrument

Thanks,

David

how to record audio without