The 2014 runners-up failed to reach the quarter-finals for the first time since 2002 and Sampaoli, appointed in June 2017, was unclear on whether he wants to stay on.
Sampaoli's side seemed set to improve following a 2-1 victory over Nigeria but a Kylian Mbappe-inspired France put paid to their hopes of glory in Kazan.
Quizzed about his future, Sampaoli told reporters: "It's very painful, especially as the players made a huge effort, gave everything in a difficult game, but they haven't achieved their goal.
"I'm sad, frustrated, that’s normal, but for me the fact of being here and being able to be where I want to be makes me not want to decide today."
Pressed on whether he has any regrets after a testing campaign in Russia, Sampaoli added: "It's all very recent, it's too soon to analyse mistakes we made. I'm sure there might have been mistakes, but it's too soon.
"Some things are normal in football. We played a team who's fast in transitions, we managed to turn around the match, but in a short time, in a strange play, we lost our advantage so there are certain things to take into account. You always have to check what you can improve."