In 1923 Garrett Morgan patented a traffic light with red, yellow, and green lights that looked very different from today's traffic lights. How can I fix this in parallel structure?

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.