Recording with Microphone ?

Suddenly my Audacity recording became weak and blurry.
I updated from 2.4.2 to 3.1.3 and still the same.
I thought it was recording from my internal computer microphone, but the phone rang during recording and that was in the music.
Do you recommend only using an external microphone?
Last year this internal recording off internet music was working fine, but not now?
THANK YOU SO MUCH!

Use [u]WASAPI (loopback)[/u].

I thought it was recording from my internal computer microphone, but the phone rang during recording and that was in the music.
Do you recommend only using an external microphone?

You shouldn’t be using a microphone at all unless you want to pick-up acoustic sounds. (The “recording device” icon is an image of a microphone but there are other possible digital or electronic options.)