So the first was for water damage, but the last two times were just for screen and surrounding areas. I have wondered a few times if water damage could be messi

So the first was for water damage, but the last two times were just for screen and surrounding areas. I have wondered a few times if water damage could be messing with something or maybe the screen was never properly fixed. I go back and forth because it didn't do this until recently, so could it really be water damage? Should I just buy a new phone? And if this post isn't a poster a child for right to repair, I don't know what is!