Muller has only scored one Bundesliga goal this season and was an unused substitute during Bayern's 3-0 win over RB Leipzig in the league on December 21 - the club's last fixture.
Bayern chairman Karl-Heinz Rummenigge claimed last month that the 27-year-old needs to improve following a disappointing campaign, and the German international has admitted that he is a little concerned about his current role on the bench.
"The last game against Leipzig was not ideal for me on a personal level because I did not play," Muller told Sport Bild. "There was more space than in previous games and it was a game where I could have enjoyed myself.
"So I was obviously not watching on from the bench with a smile on my face. There will be situations where players will have to settle for a place on the bench in important games. But we have to deal with it as a team."
Muller enjoyed his best ever scoring season with Bayern last term, netting 32 times in 49 appearances, including 20 times in the Bundesliga as the club won a record 26th German title.