Ukraine coach Oleg Blokhin criticised his players for basking in the glory of their opening Group D victory as defeat against France on Friday left them struggling to qualify for the quarter-finals.
Second-half goals from Jeremy Menez and Newcastle midfielder Yohan Cabaye, with his first international strike, gave the French a comfortable win to put them top of the group.
And, after the euphoria of their win over Sweden the co-hosts now have to beat England to progress.
"As I said, the win against Sweden didn't mean anything, so if we thought we were through, we were wrong," said Blokhin after a match which was halted after five minutes because of a severe thunderstorm and was not restarted for almost an hour.
"I think some players thought that and we'll have a serious conversation with them.
"This European Championship isn't the Ukrainian league we have to play at a higher level and game after game.
"I didn't like how my team stopped playing after the second goal but we lost and France are one of the best teams in the competition.
"Everything went wrong from the break and that led to first goal. "After that, we conceded the second and it was all over.
"We will analyse this. Of course, we are not happy. The fans aren't happy and nor am I. But I can't change anything; I can't change the result.
"We still have one game left against England and we need to prepare properly for that."
France coach Laurent Blanc was relieved his side ended their record-breaking winless run at major tournaments after eight games without victory in finals.
"We'll enjoy this one. As the French know very well, it's been a long time since we won a game at a major tournament," he said.
"We're very happy to have won. Six years in major competitions and to not win a game is a long time.
"I hope our next win isn't in six years. If it is, then I want be here to talk about it because I'll have been fired long before."
