It’s a 2020 with 1200 km shouldn’t have to change water seal?76c quite warm but not hot. White smoke is not normal.
Have you lost antifreeze? When was the last time the water pump seal was changed?
White specks on the spark plugs or piston crown indicates a coolant leak. Most like sources of an internal leak are the water pump seal, base gasket and head gasket/o-ring.