LG K20 Plus model TP260 screen problems

Hello,

I dropped my new phone almost immediately after I got it (I know, horrible). However, I found a place to repair the screen at a reasonable rate. When I got it repaired however, a bit of the side came up. Before I could go to the guy to get it fixed, more came up and ended up cracking again. I got refunded, but now I have no idea what needs to be fixed? The screen is cracked but the light also flickers in the background, the screen gets really blurry sometimes and there are thin dark lines going through the background that weren't there before. It's also relatively easy to pull up the screen, so I feel like this is all caused by the detaching screen, but I don't know what I would need to buy to replace it again, or whether this is also a problem with the LCD business under the phone. Thanks for any insight or links you might be able to provide about reliable repair parts or websites!