WiFi not finding any networks

I've had this phone for about a month ever since my old one broke. But long story short, water dripped onto it in the middle of the night and it sat and saturated for about 4 hours. It works, despite being a little slow and the screen being cloudy, but I've had one big problem with it.

The wifi isn't connecting. I don't mean that the wifi won't work, I mean it's not picking up any networks. I've tried turning wifi on and off again and making sure airplane mode wasn't on, and I've even gone to different places, but no matter where i go, it's not finding any networks. Is there any way to fix this?