Nintendo 3DS Camera repair

Hello

I replaced the button sticker of the console due to a problem I had with the buttons and that went perfectly. However, in the process, I teared the camera flex cable a bit and now the back camera doesn't work, it stays on black, doesn't freeze the console.

I guess due to a health problem I have for some time my head isn't where it has to be since it's the first time I tear a flex cable

Replacing the cameras is a bit more difficult, althought for me the most difficult part would be being able to put the screen back without any dust particle inside. Which has been always a pain for me. Is there any other way?