Town boss Rob Edwards was left frustrated after seeing his side surrender a two-goal lead in the 2-2 draw with Oxford.
The Hatters led 2-0 thanks to goals from Jordan Clark and Tom Krauß only for the visitors to storm back and earn a point at wet and windy Kenilworth Road.
Liam Walsh was sent off within a minute of his introduction but the Town dug deep to keep the U’s out and might have snuck it in the closing stages.
“It was our own fault, we’re lacking confidence and belief right now and the timing of their first goal [on the stroke of half-time] didn’t help,” Edwards said.
“We had a quick start and we were 2-0 up but we still made one or two errors but it was the middle section of the game where we lost our way.
“It’s frustrating but we have to give them credit but hands up – we’re not in good form, the crowd were edgy and demanding more and rightly so.
“However, what pleased me was the way we played after the red card. We were the better team when we had 10 men. We stayed with it and might have nicked it at the end.
“We didn’t go under, it was just not a great performance due to a lack of confidence and belief.
“The atmosphere was tough so for the lads to come through that was positive and hopefully we can take a bit of confidence from that.
“It wasn’t enjoyable but we took something from the game. It looked like at one stay we were going to lose so we can take heart from the performance after the red card.”