That's not a solution to a problem. Samsung does not have a service centre, there are many dealers, but not a single company operated Service Centre.

Disable the built-in Security feature in the Device Care app.It was the same problem in my S9+, and also in my new Note10 plus. Itna mehnga phone restart hota hay to dil mein dard hota hay... But after deactivation of Security, it does not restart.