Keith Andrews said he didn't like the second-half performance produced by his Brentford team as they let a two-goal lead slip to draw with bottom club Wolves.
Andrews watched on as Michael Kayode and Igor Thiago, fresh from his first call-up to the Brazil squad, put the Bees in control at Gtech Community Stadium on Monday.
However, Adam Armstrong reduced the deficit before the break before Tolu Arokodare's header sealed a share of the spoils, though either side could have won it late on.
Arokodare hit the crossbar before Reiss Nelson nodded just wide, but the spoils were shared, much to the frustration of Andrews, whose team had started the contest well.
Brentford registered an expected goals (xG) total of 2.33 from their seven shots in the first half, but mustered just three attempts after the break worth an xG value of just 0.23, compared to Wolves' 1.01 in the second half.
The result also saw the Bees fail to win a Premier League game after going 2+ goals ahead for the first time in 37 games, last dropping points from such a position in December 2022 against Tottenham (2-2).
"Yeah, very frustrated. The first half I thought we played well," Andrews told Sky Sports.
"I thought we could've been more clinical in moments of decision-making. We had to make more of what was a pretty controlled half, although they had moments.
"They're always going to cause that because they're a well-organised team filled with really talented individuals and in the second half we didn't have control.
"Even when it was in transitional moments and phases, we didn't look in control at any stage really. We were huffing and puffing. I didn't like the second half."
It also proved to be a missed opportunity in the race for Europe, with Brentford unable to take advantage of the slip-ups of several sides around them.
Brentford moved up to 45 points and are just four behind fifth-place Liverpool, who were held to a shock draw by struggling Spurs at Anfield on Sunday.
Chelsea, who are sixth, also lost to Newcastle United at the weekend, while Everton were beaten by league leaders Arsenal, with the gap now getting ever closer to see who will qualify for Europe next season.
Andrews' men are assigned a 2.7% chance of finishing in the top four by the Opta supercomputer, though fifth is likely to be enough to secure Champions League qualification, which bumps up that probability to 8.9%.
They are predicted to finish in the top seven in 48.8% of the season simulations, which could seal a spot in the Conference League, though Andrews was quick to temper those expectations at the business end of the campaign.
"I think when you're talking about us in the same breath as Chelsea, that's obviously pretty good considering there's only eight games left of the season," Andrews added.
"But the reality is we could've produced more, and I think we need to be honest with that and look at ourselves and the second half display and why we produced that."
And when asked what the message was going forward, Andrews said: "I think it's really simple.
"If we produce a second half performance again, we will struggle. If we produce first-half performances of that level, then we will have a good end to the season."