Simon Bassey slammed Pompey’s poor defending as they slipped to a League One defeat at Bolton.
Dion Charles took advantage of some generosity in the back-line to give the home side an early lead in the north-west.
There was more sloppy play after the break, with Josh Oluwayemi unable to claim a cross and Kieran Lee firing home, although there were chances to deal with the danger before that point.
Eoin Toal then wrapped up a comfortable win for Wanderers and Bassey was unhappy with what he saw from the Blues.
Pompey’s interim head coach said: “It was a really poor first goal for us to give away – we didn’t deal with a straight ball down the pitch and we find ourselves 1-0 down.
“We’re not a high scoring team at the moment and so we gave ourselves a mountain to climb away from home.
“Then we came out for the second half and there was an individual error that you can’t legislate for, but we were too deep in the build-up and don’t track our runners. It’s not good enough.
“From that point it’s a really tough ask and although we huffed and puffed, we didn’t really have the conviction that we were going to get back into it. That’s hard to take.
"We’re in the habit of giving stupid goals away and they haven’t had to tear us apart – you can’t keep doing that."
“Bolton are a good team and if you give them a two-goal head-start then you expect it to be difficult and that’s what happened.
“We’re in the habit of giving stupid goals away and they haven’t had to tear us apart – you can’t keep doing that.
“We went with two number 10s because we wanted the penetration of Owen Dale and the quality of Michael Jacobs.
“I have to take some of the responsibility because it never came to fruition for us going forward, but when you give away the goals we did, that’s nothing to do with shape.”
Pompey were dealt another injury blow ahead of the game, as skipper Clark Robertson was ruled out.
Bassey said: “He picked it up in training on Friday and so we sent him for a scan and are waiting for the result of that.
“We planned for him to play and he just felt something. It’s disappointing for us and obviously disappointing for Clark.
“We’ve had too many injuries this season and that certainly hasn’t helped us. It’s thrown us off key and then you can see confidence seeping away.”