@civic_ruleZzz,
Dear bro. which ZIC oil brand you are using in you civic, it should be ZIC HIFLO, API SM, SAE 20W-50 , if not then switch to ZIC HIFLO, secondly if problem persist then bring your car to our any ZIC SERVICE CENTER we shall diagnose the issue and most probably if external oil leakage is not there it would be the issue of worn out piston rings
Thanks