Keylor Navas says he was disappointed to lose on his Real Madrid debut as they suffered a 2-1 defeat to Fiorentina on Saturday.
The goalkeeper, who joined the European champions this summer from Levante, was overlooked in favour of Iker Casillas for the European Super Cup on Tuesday but was given the chance to make his first appearance for the friendly in Poland.
However, despite Cristiano Ronaldo's early opener, Carlo Ancelotti's side lost to the Serie A club and Navas said it was a disappointing result for him to start with, although he has settled in well otherwise.
"It was a shame that we couldn’t win tonight," he said after the game. "We have got to keep working and improving every day.
"But I felt comfortable out there and the overall sensations were very positive. Getting that first contact with my team-mates was important."
The Costa Rica international feels the team must now look towards their two-legged Spanish Supercup tie with Atletico Madrid on Tuesday and Friday.
"We want to win; we have a winner’s mentality," Navas added. "The team is motivated and we know that an important trophy is to be won. We will give everything we have got to win it."
The 27-year-old said he was prepared to work hard to make his transition to life at the Bernabeu as smooth as possible this season.
Navas continued: "I have no reason at all not get along with anyone here. I have come here to work hard with humility and push myself, just like I have done all through my life.
"I am at the coaching staff’s disposal. I will never give up and I will continue working as hard as I can every day."