If that is not possible you factory reset the phone and restore from backups. Just like your PC you must backup what you can't lose on a phone.
Please help as soon as possible! My phone's home screen repeatedly crashes, saying something like "Unfortunately, Samsung Home Screen Experience has stopped." And when I click "Close App" or "Restart App" then it just pops up again. I have NO access to ANY apps like this, so this is pretty critical! My phone is a Samsung Galaxy J7 Crown. Please reply asap!