Wrexham are expected to be active in the final stages of the summer transfer window.
Players including Elliot Lee, Harry Ashfield and Aaron James are among those who could depart the Red Dragons prior to Tuesday’s transfer deadline.
Meanwhile, Parkinson is thought to be eager to add a forward and a central defender to his ranks.
And Parkinson suggested some members of his squad could have been distracted in the first half by transfer talk.
“We will be endeavour to improve what we’ve got, but I think, a bit of uncertainty in the camp, players coming in, rumours of this and that,” Parkinson said.
“Has that affected us? I don’t know. It looked like it in the first half tonight because I just wanted to see more belief in us.”
He added: “We had some slack moments on the ball, but that can happen.
“But in the main, against a decent side, we played well. But when you concede goals like that, it can knock the stuffing out of you.”