mobile

So I got a nexus 5 from a friend. He messed up while rooting and flashing roms. He had 5.1 on it, but the camera wasn't working, nor was hangouts. It was also saying he had no sim. So I messed around in his TWRP, and tried a few things, didnt help. I ended up getting it bootlooped which is usually no big deal. I then flashed 5.1, bootlooped. 5.0, bootlooped. I did this all manually with adb commands. Does anyone have any ideas on what could help ?