@valenciyaaaaa start by replacing your screen. Your phone vibrates because of a broken display. Once you have that fixed you can check and see if A. the vibrations stopped or B. if this is just a bootloop related to other issues. Again, screen first then re-evaluate.
Since iFixit does not yet have a guide for this, use the one [https://www.sosav.fr/guides/mobiles/samsung/galaxy-a13/bloc-ecran#|from here] Replacement screens are readily available and not to expensive.
While you work on your phone, take lots of pictures. Once you are done with it, take those pictures and create a guide for iFixit. That will help the next person that has the same problem as you do. It's easy and fun to create these guides. https://ifixit.com/Guide/new The iFixit community will appreciate this.
Repair is War on Entropy!