The match that will take place at Tottenham's home ground is decisive because they can achieve a bigger victory if they are able to take advantage of the conditions. Tottenham did not play badly in the first leg, it's just that they were unable to create chances to score because even though they had several chances, Tottenham had problems in the finishing stage. The momentum of playing at home must be used by Tottenham and they must not take it easy if they don't work hard to get the win.
I also assume so because in the first leg Tottenham played with a higher level of ball possession and AZ Alkmaar only won because of one own goal so that it was just luck for the home team in the first leg. As for the second leg I think Tottenham will try with maximum ability in order to win with a higher score and be able to qualify for the next round to compete again in the last eight of the Europa League this season. And I am quite sure that Tottenham will not underestimate their opponents at home because being behind by one goal in the first leg is still quite possible for Tottenham to reply in the second leg.
Even as that Tottenham was supposed to be the second, it was more serious because it was not that they didn’t play well. The first leg, but we all see that AZ defense was so hard for them to break through, so this will go a long way for them to also win in the second leg, as AZ will play a defensive game from the beginning of the game till the end so that the game will end in a draw, and it will be to their advantage because they have already won the first leg, so the second leg will not be as easy as it seems if Tottenham can play a game of over 90 minutes and just have a single shot on target; it is enough for you to know that that AZ defense is strong.