Newly installed touchscreen not working

My fiance’ replaced the touchscreen because I closed it with a pen still on the keyboard. Now the replacement screen, albeit is not cracked, but the touch screen is pretty nonfunctional in my opinion. The corners don’t really work , sometimes it picks up my touch, sometimes it goes bonkers. The bottom corner of are bent and I’m continuously having to snap them back together. I’ve bought my laptop one year ago and I feel I already need to look into another, any help would be super appreciated.