GA Pilot reported a critical ground conflict on landing rollout with opposite direction landing. Both aircraft deviated in opposite directions to avoid a collision. Neither pilot reported hearing radio position reports.

Narrative

On five mile called on local frequency a five mile straight in approach; also a closer final approach to landing Runway XX. Landed Runway XX and about 1/3 down [the] runway another plane; about 1;500 feet ahead coming toward me from the opposite direction; Runway XY. Both planes headed toward opposite sides of the runway. I stayed just on the blacktop and the other plane touched a little gravel before reentering the blacktop runway surface; in order to pass me. My plane is a low wing and the other was a high wing. Both planes and occupants suffered zero damage. We proceeded back to the ramp for conversation to try to learn what element had been missing; leading up to the event. We both had radio contact as we returned to the ramp. The other pilot stated they were on a standard pattern touch and go. Wind was light and variable; however it favored Runway XX only slightly; as it was a quartering headwind from the West. Either runway would have been acceptable and the other pilot elected to use the standard box pattern; Right Down wind for Runway XY given the low wind speed from his quartering West entry to final. While I elected a long straight in approach. While both approaches to landing are appropriate; my choice requires additional visual observation; which didn't mitigate the event in this instance. While the event ended without injury or damage; I continue to look for mitigation for future operations. This kind of event has never happened to me in the past and likely will not in the future but; interested in any thoughts for future education or procedures for the future safety!