Wi-Fi weak reception. Some IC changed after water damage

Recently my pixel fell in river and was submerged for at least a nice 10 minutes. When I retrieved it I immediately switched it off. But after a few days it didn't start. I got it repaired everything works great except the Wi-Fi and front speaker. Wi-Fi always shows weak connection only works if I place the device on router then the phone is able to get full range. Any visibility on this?