Rear camera not working, would like recommendations on parts

Hi all, small story time.

The rear of my phone was cracked. I got it fixed by an authorized Samsung service center. (UbreakIfix) They told me after the repair that the phone was still water resistant. I took my phone to the pool, and someone decided to jump into the spa thoroughly soaking my phone. Whatever, no big deal right? Just a splash. Turns out the service center was wrong. The device was no longer water resistant at all. I quickly noticed that my fingerprint sensor stopped working, but the camera was working fine. I turned the device off, and allowed it to air out in a dry environment for a few days. When I turned it on, to my amazement, everything worked. Both cameras functioned as normal, and the fingerprint sensor came back. I guess there was still a small amount of water in the device because the camera stopped working by the end of the day. I assume this is due to water damage.

Onto the question

I was planing on purchasing a new camera unit from iFixit but was disappointed to find out that they do not sell this part. Does anyone know of another retailer that sells the part I need? Also, is there another course of action that could have better prevented this. I didn’t have any desiccants on hand, but I assume that could have helped a little.