Even though Bayern Munich trailed Lazio 1-0 in the first leg, Champions League fans expectations of them are still very high, that Thucel is predicted to be able to manage his team to turn things around at the Allianz Arena. But maybe this is a moment that can trap bettors, who fail to see Lazio as a team that can create a surprise like what happened in the first leg. Maurizio Sarri is an experienced figure, he has more strategic options to maintain his team advantage. To minimize risks, it is possible that Sarri will choose a pragmatic strategy. Harry Kane cannot bump if Sarri chooses to park the bus in the penalty box.
These two coaches have both coached Chelsea, but Tuchel had a better portfolio when coaching Chelsea. 
Psychologically, perhaps Munich is the favorite to be able to turn things around when they host Lazio at the Allianz and ensure they qualify for the next round.
In my opinion, Lazio's performance in the domestic league is mediocre, not superior. This opens up the opportunity for Lazio to have ups and downs in performance.
The pressure from the Munich supporters at Allianz could have caused the Lazio players to drop mentally so that Munich could take advantage of it to steal more than 2 goals.
Moreover, in the Lazio lineup there are not many players who have experience competing in the UCL.