Over night my iPhone had coloured lines and now just white lines.

My phone this last week has been acting annoying, it clicks on random apps and the touch screen doesn’t work well i either have to press very hard or keep turning on and off my phone. Whenever i typed it clicked random words and letters and would always take me onto random apps and swipe on the screen. I broke my phone about a month or two ago, twice. The first time i dropped it and it went completely black but i could still hear calls and music etc. The second time a couple days later I dropped it very lightly again and it just went completely black .I could hear but couldn’t use the screen, basically the same as before. Before these two breaks I dropped my phone all the time and nothing would happen. But ever since the first break a month ish ago whenever I even slightly drop it now it breaks. I dropped it about a week ago on my bedroom floor but nothing happened and it didn’t start messing up until a couple days ago. Idk if my phone wasn’t fixed properly or all the pieces are just permanently loose in the phone but. Last night I went to bed and put my phone on the desk next to me playing rain sounds on youtube with the flip cover shut. I woke up to the entire screen covered in rainbow coloured vertical lines and I couldn’t see any of my original screen. I kept pressing on it until eventually now i can access my screen but there’s white and grey vertical lines covering my screen. I don’t know what to do.