PA-28 general aviation pilot reported a runway excursion while landing with a tailwind at a non-towered airport in visual conditions. The pilot regained control and stopped the aircraft after the overrun and evacuated safely.

Narrative

I; Person A; am a foreign pilot. I possess a CPL and a foreign based FAA license. I was operating as Part 91 pilot in command during the flight to ZZZ where this incident happened. I was flying a rented aircraft from a flight school. The aircraft registration was Aircraft X. During my flight I had one non-pilot passenger on board. This incident happened on Day 0. Prior to the flight; I checked the Notams for the airport where the runway condition is depicted as 'poor'. I departed ZZZ1 at around XA:00 pm Local time and headed to ZZZ airport. With no ATIS or AWOS information available; as well as there being no other traffic; I decided to make a straight in approach for Rwy XX. On final approach we realized there was no windsock on the runway in use but we still decided to land as the winds seemed calm. As I got closer to the runway I realized I had underestimated the condition of the runway. This led me to decide to make a soft field landing. During the rollout after touchdown; the poor condition of the runway made the plane skid to the left. This made me realize that applying maximum braking might make the plane veer off the runway. This eventually led me to overrun the runway. After getting out of the plane I realized there was a windsock on Rwy YY and the wind was blowing from 150-170; 5-10knots. I initially thought there was some problem with the aircraft's brakes but after seeing the windsock I knew my landing could have been influenced by tailwinds that made me overshoot the runway. I asked a local old couple if they would be able to help me. They seemed to misunderstand the situation and called the park ranger. The park ranger then called the FAA. I asked the park rangers to help me push the airplane out of the dirt back onto the runway. After the plane was back on the runway; I inspected it to see if there was any visible damage on the plane. I taxied the plane around to check the brake system. I came to a conclusion that the brakes were not at fault during my runway excursion. They were working fine. Afterwards I was advised not to retract the gear by the school operator and came back to my home airport; ZZZ1. The plane was grounded for an inspection by the school operator; just to make sure there is no unnoticed gear damage. The plane was inspected and released into service on Day 2. Before I fly solo again; I will discuss this event with the school's Chief Instructor and we will discuss how to avoid anything like this from happening in the future. Next time I decide to go to ZZZ; I will fly and land there with an instructor.