Spurs had led momentarily through Son Heung-min but were soon pegged back by Joshua Kimmich, before Robert Lewandowski gave Bayern the lead on the stroke of half-time.
Serge Gnabry score four second-half goals and Lewandowski added a second as the visitors came away with a mammoth win but Pochettino does not believe he needs to search for an explanation.
"I don't need too much time to explain. We played 30 mins well, started well, pressing high," he told BT Sport.
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"But we were unlucky that we conceded in the first minute of the half.
"They were very clinical. After we scored the penalty for two we had chances to score the third. But from the 83rd and 88th minute we conceded three more goals.
"In football it can happen. Every single touch went in. We are very disappointed and very upset but we have to stay together. I think we are strong in our mentality.
"Maybe you are bored about my speech but football is today not yesterday. It is always is about the show. You have to do it today and tomorrow. It is not about experiences and what happened three months ago.
"We are disappointed. Every single touch from Bayern was clinical. They scored with every touch. It is tough to accept. You have to move on.
"This type of situation you have to face. It is tough and you need to be strong and keep going. Stay together, help each other and be all together. When you receive this type of result it is important to bounce back and believe in yourself. It is the only way to recover."
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