Car Model : Elantra GLS 2013 MPI 1.8 6A automatic transmission

My car hesitates while peddling gas at low speed (below 30) I have recently changed Timing gear,oil pump, both vvt solenoid , spark plug and coil, still problem not solved

Also has poor acceleration performance.

What could be the problem there is no diagnostic code.

  1. Exhaust manifold is weak,

Attaching some of OBD2 readings

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