Starting problem

Pull the spark plugs out, then see if it will crank. It should spin faster than normal, but what you are looking for is if coolant sprays from one of the spark plug holes. If it does, the engine was locked up due to "hydro-lock", meaning that cylinder was filled with coolant from a leaking cylinder head gasket. Liquids cannot be compressed, so that piston prevents the engine from cranking.

The clue is your observation of smoke from the tail pipe. Burning coolant in the engine results in white smoke. Here is more information that might help:

https://www.2carpros.com/articles/head-gasket-blown-test