M21 getting auto restart and stucking at logo

[M21pavab]

From last update my m21 is getting auto restart and stucking at logo for 10 minutes. Help me to solve this issue.

Thanks in advance. 

[goodthings]

My dear reset all settings of your's device in general management settings and also stop Auto optimization in device care app .Thanks.

[Mehz]

Hard reset ... better take to the customer service

[cs_member8]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We acknowledge your query. We request you kindly visit the service center for a physical inspection of your device. So that they can check the exact issue with the device and fix it as the earliest. You can locate your nearest service center with this given link: https://www.samsung.com/in/support/service-center/

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support

[Chanakya_Reddy]

Backup your data before it's too late. To turn on the phone forcefully, press and hold power button and volume down button.

After that try factory reset.
If the issue still persists, try installing firmware whose process I have explained in my post(link below):

https://r2.community.samsung.com/t5/Galaxy-M/Latest-update-about-my-Samsung-M21-restart-issue/td-p/1...

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