Asked why his side could not start games with more urgency, Frank said mistakes cost Spurs in the first half, but that he had still been encouraged by elements of the team's peformance.
He continued: "I wish I could (clicks fingers) do it like that. Then it would be easy. It’s not. I need to look at the game back. I think we did still some okay things in the first half and just made two mistakes," Frank continued.
"They punished the first one so hard after 12 minutes which makes things more difficult to come into a football game, but what I liked of the second half is we were even more aggressive in the high pressure, and finally the 50-50s landed a little bit more for us. It felt like everything landed for them in the first half.
"Mid pressure was good so not too much through us and then we played more behind them and hurt them more in that way. How united the fans and the players were second half. That’s what we need to build. The fans helped us massively and pushed us towards a big point and they were fantastic against Dortmund so can we do that more and more consistently together we can create some magic."