Jeffrey Schlupp and Eberechi Eze scored a goal apiece as Palace heaped more misery on United with a 2-0 victory, leaving the Blades bottom of the table with two points, 11 adrift of the safety zone.
Wilder’s side have not won in 17 league games this season -- the longest winless run from the start for an English top-flight side.
“We don’t look like an established club,” Wilder said. “We are obviously not and we are fighting to gain that and it’s going to be an incredible struggle to do that from the position we are in. We’re obviously disappointed with the stats we’re being reminded of. It’s a harsh league when you’re off the pace as we have been for a long time, so it’s tough. There’s no hiding place for me and the players.”