The tennis legend's attempts to break the all-time record for major wins has been thwarted by Jannik Sinner and Carlos Alcaraz over the past two years and he admits that he has been given "a slap from reality" in his attempts to keep up with the duo.
Djokovic told Piers Morgan Uncensored: "I believe that to some extent I am the superman who can never injure myself, that can never be weak.
"But I got a slap from reality in the last couple of years. I'm just getting to know this new chapter."
Djokovic was beaten three times by Sinner and Alcaraz combined at the semi-finals of Grand Slam events this year but still has the belief that he can get the better of the pair on the biggest stages.
The 38-year-old sports star said: "I'm aware that [comparing] my best level now and their best level now, they're better. That's the reality.
"I have always believed in things that are almost impossible to achieve.
"I do have doubts that I can win Slams against these two guys. But when I enter the court, I don't care who's across the net.
"I always believe I'm better and I deserve to win."
Sinner has been embroiled in controversy this year after serving a three-month ban for testing positive twice for a banned substance in 2024 and Djokovic believes that the incident will "cloud" the Italian ace's career.
The former world number one - who was deported from Australia in 2022 because he was not vaccinated against COVID-19 - said: "That cloud will follow him as the cloud of Covid will follow me.
"Over time it will fade, but I don't think it will disappear."
Djokovic also questioned the timing of the ban as it meant that Sinner didn't miss out on any Grand Slam tournaments.
He said: "There is the lack of transparency, the inconsistency, the convenience [of] the ban coming between the Slams so he doesn't miss out. It was very, very odd.
"I really don't like how the case was being handled. You could hear so many other players who had similar situations coming out in the media and complaining that it was a preferable treatment."
