Roger Federer said he 'cannot accept' the poor level and attitude he showed in defeat to Felix Auger-Aliassime at Halle.
Federer is trying to make his way back from double knee surgery in the last year, and he withdrew from the French open in the fourth round to focus on his preparations for grass season.
That has not ended up going well, though, with him managing just two matches in Halle - his only pre-Wimbledon tournament.
"[It] was not a good attitude from my side, I was disappointed in the way I was feeling on court, the way things were going," Federer said
"That you know I’m not getting better spells and all that stuff I just think the, you know the the whole difficulty of the comeback got to me as well a little bit.
"How much I have to push on every point, try to make things happen and I realised it was not going to be my day, there was nothing I can do, I started to get really negative, you know, and this is not normally how I am, by any means.
"So I think this is not something I’m happy about and proud about but at the same time, I looked at my whatever 1500 matches I played these things.
"I need to take every match as an information I need to figure it out.
"I need to understand why it’s going on and, again, I got a lot of information from Paris I feel like I got a lot of information. Also from Geneva and Doha in particular and and then changing surfaces is not easy.
"It’s important for me to take the right decisions moving forward for Wimbledon and for the rest of the season because this type of third set I cannot accept.
"The first two are totally okay, no problem there. But, look, I guess it happens and it’s all good from my side.’
It is less than ideal preparation for Wimbledon for Federer, but he says he knows what he needs to improve. Unfortunately, it's also the hardest thing to achieve: consistency.
"I needed time to digest. The third set, I was unhappy about how it how it ended. You know, similar to Geneva and in some ways where I felt like I played actually good in spells but it was up and down.
"I mean it was good moments and bad moments in that match so it’s a bit up and down but that’s, I guess, part of the comeback.
"I just think the consistency of point for point has not been easy for me, since the comeback and I knew that’s what is going to take time."
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