Diagnostic readings - Fuel

Morning guys

I ran a diagnostics on my car which is just cranking and not starting

please see attached picture for results, it reads as "Post catalyst fuel trim system too lean"

Please can anyone advise what needs to be changed based on the diagnostics? . I was told to replace the full fuel pump..

Is there some sort of kit or small replacement parts (which could be faulty on the pump) and could be used to repair my faulty pump?

your advise is appreciated