Arsenal went into the break two goals up but ended up drawing 2-2 thanks to some calamitous defending that left many fans screeching with anger.
Watford caught out the visitors on more than one occasion trying to play out from the back, and one of them led to their first goal before David Luiz gave away another penalty from which the hosts levelled the scores.
Despite Unai Emery’s men failing to pick up maximum points from their last three games, Leno believes Arsenal must keep hold of their tactics.
Arsenal keeper Leno said: “That’s our style to play. We try to take the risk because if we beat the press of Watford, then there is a lot of space for our strikers.
“In the first half, we did it very well but in the second we didn’t create too many chances from playing out from the back. It is still a process we have to work on this.
“Everybody was angry and disappointed after this game. The manager is a very positive guy. He wants to be positive and he said we will analyse this game with time.
“Now everybody was with emotions, very mad and crazy. But that is normal after the game. He said ‘calm down and then on Tuesday we analyse this game and then on Thursday we have another game.”
Arsenal travel to Germany to face Frankfurt in the Europa League on Thursday before hosting Aston Villa on Sunday.
