Hi there 👋
Try volume down and power buttons simultaneously.
Also try to change chargers, and leave it on charge for at least an hour or more and see it that would make any difference.
Also try unplug your phone Press and hold power button till samsung logo appears (if it goes that far) then immediately plug to charger.
Most of the times its due to charging "brick" or USB and sometimes battery is drained too low and you need to keep charger on for couple of hours.
If nothing works might be worth to ger professional repair shop looked into it.