Dundee United were hammered 5-0 by Dinamo Moscow to see them exit the Europa league qualifiers after losing 7-2 on aggregate.
"We had the worst possible start, losing a goal after two minutes against a very good side," boss Peter Houston said.
"I said last night it works both ways from a change of manager and Dinamo played well for their new coach.
"They were just too strong for us physically and I was disappointed about the first-half when we didn't believe in ourselves. We should have done better than we did.
"But I have to put things into perspective with the wealth and experience of the Russian side. We have a very, very young team.
"If we can keep this team together for the next couple of years we will be able to build and learn from the European experience."
Houston insists his side paid dearly for giving the Russians "too much respect" at the start of the game.
"I was very frustrated by the fact that the players stood in their own box and watched the cross coming in and I think it was due to the fact that we are naive and inexperienced in Europe," the Scotland assistant continued.
"As I said, we are very, very young and I think we gave opponents too much respect from the start.
"Dinamo are a very good side, good passers and very quick but I was disappointed with the fact that our players didn't challenge them in the penalty area for the goals."
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