Chosen Solution

my charging port didn’t work so I cleaned it with a toothpick and then tried under water forgetting its not water proof (my mistake) is there anything I can do to fix this without spending money hopefully?

The screen is likely going to need to be replaced. Try opening the device and seeing if the screen connector is corroded, and if it is clean it with 99% isopropyl alcohol. If that still doesn’t work, it will need a new screen.