Bus in Korea

I am inconvenient to get a bus in Korea. I am not familiar with sitting in a chair in a Korean bus. Too small to fit my body. My hight is 185cm and 185pound. Maybe many foreigners living in Korea complain uncomfortable chairs in Korea. When I was in Daegu, I always have my own car thanks to my mother's support. I drive to work and school without much traffic congestion. However, I am in Seoul with the car. So I hardly drive because of too much traffic gam. The population of Seoul is over 10 million. It's a high density of population and the air is pool.