Ignition turns over but engine doesn't catch

first of all... is there fuel in the tank? if so, then its possible that there is no spark or fuel delivery or both.... if you are unable to check this for yourself, get it to a local garage....

Could also be flooded ,requiring plugs removed dried/ refitted.

Faulty engine cooolant temp sensor is a cpmmon fault of non cold start .Also check crank sensor .