Gallas was often at odds with his former Gunners teammates.
But he told L'Equipe: "When I was captain I wanted to give a message, but they didn't get it.
"I may have been clumsy, but the substance was right.
"I came from Chelsea where I won titles, and I wanted to share my experience, because I thought we missed commitment in our work.
"My message has not been understood and I am also responsible for that. But unfortunately the last season showed that team still misses something.