Hi @addeboi,
I'm going to have to disagree with @tojaert in his analysis of your issue. Mic1 is located on the charge port flex cable, but the one you're having the problem with is mic2, the one that's used when recording videos. That microphone is located on the power button flex cable. Unfortunately, most of my usual sources including iFixit do not have a guide to replacing that part, but I did find a Spanish site that has just what you need to do that repair.
[link|https://www.nadiemellamagallina.com/en/manuales/smartphones-1/apple-5/apple-iphone-11-1125/pulsador-de-encendido-flash-y-micr-fono-superior-9922|Manuales / Apple iPhone 11 / Power button, flash and top microphone|new_window=true]
You can find the part on most of the big retail sites like Amazon, eBay and AliExpress. Here's an example from Amazon.
[link|https://www.amazon.com/Button-iPhone-Keyboard-Bracket-Replacement/dp/B08P8LWBTN?th=1|Amazon.com: Power Button Flex Cable for iPhone 11- On/Off Keyboard and Flash Light Ribbon with Metal Bracket Holder Replacement Part : Cell Phones & Accessories|new_window=true]
If you're interested in more information regarding analyzing panic logs, see @flannelist's excellent Wiki article on the subject.
[[iPhone Kernel Panics|iPhone Kernel Panics - iFixit|new_window=true]]