Bayern Munich must "take a good look at ourselves" if they are to get their Bundesliga season back on track after being held to a third straight draw, so says Thomas Muller.
Julian Nagelsmann's side followed up 1-1 draws against Borussia Monchengladbach and Union Berlin with a 2-2 draw against Stuttgart at Allianz Arena on Saturday.
Mathys Tel struck in the first half to put Bayern ahead on home soil, the 17-year-old becoming the club's youngest league goalscorer in the process.
Chris Fuhrich equalised in the second half for Stuttgart, who are winless in six games this season, but Jamal Musiala's strike had Bayern on course for all three points.
However, having had two goals ruled out and hit the crossbar, Serhou Guirassy was fouled by Matthijs de Ligt in the box and stepped up to convert the 92nd-minute penalty.
And Muller believes the latest of the stalemates has left him the most disappointed he has felt after a game this season.
"Today I'm angry for the first time," he told Sky Sport. "I'm mad at ourselves. If we want to win every game, and that's our aim, then you have to play until the very last minute.
"If we are going to stay top of the table, we have to take a look at ourselves."
Nagelsmann made six changes on the back of the midweek win over Inter in the Champions League, with another tough European test against Barcelona to come on Tuesday.
The 35-year-old guided Bayern to a 10th successive Bundesliga title last season, but his side have won only three of their past nine league matches stretching into last season.
Asked if he is feeling under additional pressure, Nagelsmann told reporters: "I don't know if the pressure got higher. Pressure is always subjective and comes from the outside.
"We'll continue to work, train tomorrow and Monday, analyse the opponent and try to come up with good ideas for the Barcelona game.
"We didn't play well in the first 30 minutes today, which is a bit normal after a Champions League game. Then we had a good 15 minutes and deservedly took the lead.
"In the second half, we had chances to score the third and kill off the game, but we didn't. So in the end we only got a point."
Bayern had won 67 of their previous 106 Bundesliga encounters with Stuttgart – no Bundesliga side has beaten another as many times.
Stuttgart were good value for their equaliser when it arrived, though, having put Bayern under intense pressure.
De Ligt was penalised for catching Guirassy in the box, with referee Christian Dingert awarding the spot-kick after being instructed by VAR to check the pitchside monitor.
"That was the correct decision," Nagelsmann said. "Matthijs played a good game. It's a pity he conceded the penalty, but it happens. We move on."