while the phone is SUPER robust odds are if it spent the entire wash cycle in the machine…. the odds of it not being pretty damaged are low :(
really the only thing you can do your self is open it up and check the components on the phone from the sound of it there is probably more than one issue with the phone.
do you have it backed up?
it would only be worth trying to save if there is stuff on it that you dont have backed up.
if so i hope you have insurance. honestly it would probably be cheaper to do it that way if you have the coverage.