He always rebuked the "existentialist" moniker for that reason. Most would call him an absurdist for his insistence towards finding happiness amidst the absurd indifference of life towards ones aspirations.
Camus was a moralist; he claimed morality should guide politics. While he did not deny that morals change over time, he rejected the classical Marxist view that historical material relations define morality.[1]
Sure it does, and more than once.[1]