Thanks everyone, looks like it works for now!

Inside the trimmer, it really does look more simple when you open it up. Let’s say I can just cut the wire down a bit with scissors and then strip a bit of the cable plastic. Then the points I’m uncertain on would be:

1. The rubbery fitting that surrounds the wires and secures it to the main housing. Doesn’t feel like there would be any way to yank out existing cable and thread through the unbroken part.

2. Little gold-ish pieces that pinch the wire and connect it to the screws. Look somewhat difficult to pry open.

I am located in the US but not sure which prong is which since the cable is quite twisty and the broken part is on the trimmer side.

First time uploading a picture here so not sure if it worked, but how does it look? I honestly have no idea how to fix it.