My front camera stopped functioning

@alexanderm94667 Samsung phones are actually pretty good about telling you what has failed. In the case of your phone, you do want to go ahead and replace the camera. Since there are no specific guides for this on iFixit go ahead and use this video Replacement cameras are readily available at many online stores.

While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has a device with the same issues as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.

Repair is War on Entropy!