Chosen Solution

I dropped my phone in the shower causing it to crack down the middle and now it is glitching. It also makes random calls, texts, and opens up apps and other things randomly. I was wondering if you recommend taking it in, or should I just buy a new phone?

sounds like you damaged your digitizer (the thing that tells the phone where you touch) I would recommend replacing the screen. You could take it to a repair shop or use this guide to help you.