Harrogate Railway boss Billy Miller took the blame after his side exited the FA Cup in Tuesday’s replay at West Auckland Town.
Railway forced the return with two late goals to draw 2-2 at home on Saturday.
But in the FA Cup preliminary qualifying round replay, 2012 FA Vase finalists West Auckland outplayed Miller’s men to progress 4-2.
“I hold my hand up. Formation-wise, I got it wrong,” said Miller.
“We had struggled with the pace so I changed it to 4-2-3-1 and brought a couple of players in.
“They had done their homework on us. They knew who to pick up from corners.
“Even though we scored two, it probably flattered us.”
Dan Thirkell slotted home a last ditch penalty to equalise on Saturday after Jesus struck to pull ‘Rail’ back into the match.
Col Hunter scored both goals in the replay.
Central midfielder Fatsum Ibrahimi, 18, also made his debut in a lively 15 minute spell and Miller was full of praise for the pair.
He said: “For a 37-year-old, I don’t know where Col gets his energy levels from.
“He chased every lost cause.
“Fatsum gave us a bit of bite when he came on. We will have to protect him and introduce him bit by bit but he has bags of potential.”
Greg Kidd is a doubt when Railway host unbeaten Lancaster City on Saturday (kick-off 3pm) and Monday night’s “difficult” trip to New Mills.
The gaffer hopes to bring Harrogate Town loanees Peter Crook, Paul Beesley and Sam Jones back into his team.
“We will pick ourselves up and have another go,” added Miller.