Was Buzz Aldrin actually the first to step on the moon?

No, Buzz Aldrin was not the first person to step on the Moon; that title belongs to Neil Armstrong. Armstrong set foot on the lunar surface first on July 20, 1969, during NASA's Apollo 11 mission, famously declaring, "That's one small step for [a] man, one giant leap for mankind." Aldrin followed shortly after, becoming the second person to walk on the Moon.