Chosen Solution

last night I dropped my phone into the pool but I got it almost immediately after. I left it on my wireless charger over night because I didn’t think I could do anything with it dead. Everything seems to be working fine except my microphone, it’s very muffled or not working at all. My sound is fine, screen is fine, I don’t know how to fix it

I just left it alone and it ended up being fine

This is a problem. Water can cause long term damage slowly until it dies. Water can cause corrosion to the devise. May i add if the phone was dead the water can still damage it over time. I would put it in rice overnight. Then get some canned air on it.