Is it legal to offer private driving services in Sabah ( Grab)

Hi guys , a 27 M , ive been working as a Grab driver in Kota Kinabalu and Sandakan for the past year. Recently I’ve been thinking about doing more like private driving for tourists or locals on a part-time basis, outside of ride-hailing apps especially for long distances like to Kundasang or Kota belud.

Has anyone here has experience with doing offline driving?