The car has 180k km and has had revision and check up done 2 years ago and its been sitting for a year.

I changed the battery with a new one to try and start it but by turning the key the starter only clicked once.
Presuming it was a starter issue i tried to roll/push start it by dropping the clutch in 3rd at 20kmh but the engine just spun and didnt start.

Also tried obd2 diagnostic and no issue was detected.

Any ideas on what the issue might be related to?