Federer and Djokovic played out the longest final ever seen last Sunday when the latter edged an epic five-set clash at the All England Club.
World No 3 Federer was unable to convert two Championship points while on serve which proved costly.
During those moments, the Swiss star played it safe with big first serves straight at Djokovic.
But Wilander feels Federer should have been more adventurous, despite those tactics being being successful a decade ago.
“Djokovic would never have gone for it [the safe serve],” Wilander told L’Equipe.
“It is basic, serve at the weak point of your opponent.
“In those vital moments, Federer was paying for the years between 2004 and 2007 where he dominated his rivals so much that he never had to play an important game.
“He was not tested enough then, it was too easy for him, so he did not improve tactically.
“Nowadays, however, he’s faced with guys like Rafa Nadal and Djokovic, who are the masters in these tactical matters, and he does not play the important points correctly.”
Federer will attempt to get over his loss quickly as he aims to spend the next few weeks with his family before returning to action at the Cincinnati Masters.
“Yeah, I mean, similar to getting broken when serving for the match: take it on your chin, you move on,” he said.
“You try to forget, try to take the good things out of this match. There’s just tons of it.
“I think it’s a mindset. I’m very strong at being able to move on because I don’t want to be depressed about actually an amazing tennis match.
“Looking ahead, we had decided in the team that I was to skip Montreal a week ago to give my self enough time.
“I wish I had more (time) but I don’t so i’m just going to take enough time off when I can and then prepare for Cincinnati.”