Lazio will only aim to draw the match in the second leg. The team will not be able to win the away match against Bayern Munich. Because Lazio knows very well that it is very difficult to win against Bayern Munich. And they were very lucky to win the home match. Lazio will be tactical in the second leg. And will play a completely defensive strategy. It will be very difficult for Bayern Munich's players to break down Lazio's defence.
In my opinion, choosing a defensive strategy against an attacking team is a very bad strategy, but on the other hand, Lazio has no other choice, and they can just hope that they can not concede a single goal from Bayern in two matches, it sounds doubtful, but they need to proceed somehow from the existing situation.
And whatever the situation in the team, even if this is true and the players thus showed Tuchel that he does not decide everything, it seems to me that in the match with Leipzig the situation changed and in the return match with Lazio, Bayern will show a completely different game. Just look at Bayern's stats, how the team generally plays, how many shots on target they average per game, and how many they did against Lazio. If Lazio can at least draw in Munich it will be a very big sensation.