Harry Kane said he did not want to finish his career with any “regrets” following his move to Bayern Munich.
The 30-year-old England captain left Tottenham after 19 years on Saturday to join the German champions for an initial 100m euros.
He made his Bayern debut as they lost 3-0 to RB Leipzig in the German Super Cup later in the day.
Striker Kane said his family were “fully behind” him and he had made “the best decision”.
He said: “I didn’t want to get to the end of my career with regrets at not experiencing different leagues and cultures.
“I spent my whole career in England and the Premier League, so it may take a bit of adapting to get used to a new league.
“As you saw yesterday with Leipzig, there are some great teams in this league and it is going to be a real challenge.
“I know people expect Bayern to win the league every year, but I think teams are improving and it is getting tougher.
“For me, it is about settling in, getting as comfortable as possible and understanding the different teams and how I need to adapt.”
Kane, who is Spurs’ all-time leading scorer with 280 goals in 435 games, said he will return to the club to say goodbye.
“I didn’t get chance to properly,” he said. “I sent the players a text to say I was leaving, but I will go and do it properly when I can.”
Kane joined the Spurs academy in 2004, signed his first professional contract in 2010 and made his senior debut in 2011.
“It was always going to be a tough decision,” Kane said. “Ultimately, I’m a professional, I’ve always pushed myself to my limits and the time was right.”