It's late and I can't go into it too much as I need some sleep. But the tactical issues were adjustments that weren't made. They had an out ball to Laimer open all game, it was a similar issue with our shape as against Brighton. Anther issue was runners not being picked up as the space between fullback and CB was too open. We had the usual issue of a non existent midfield on defensive situations. He said before the game that we could look to keep possession, but I saw the usual direct approach again, when I didn't think bayern were so good that we couldn't have took more control over the game as you should in Europe. They actually dealt with the long make better than when we worked the ball around in spells.
I also think he could have used subs better, and like you said, perhaps a more compact approach would have been better anyway since its our toughest group fixture away and we're in such poor form. We looked OK by keeping it compact in defensive situations against Arsenal only a week ago, the same tactics probably would have kept them at bay and reduced space for both runners in behind and the likes of Musiala, which were two things that hurt us throughout the game.