Chosen Solution

Look I have a lg stylo 5 and some guy was goofing off at lunchtime and made me loose grip and drop my phone and a black line appeared and it was fine at first and then it decides to screw up like the screen has 100000 finger prints on it I honestly don’t know what to do any help

Declared puma this “drop my phone and a black line appeared” is a pretty good indication that you have a broken display. Display assemblies are available for around $50USD and use something like this video to replace it.