The QPR boss was unhappy with his side's defending in the West London derby defeat, and also chastised center back Chris Samba for "wandering up front" late in the game.
The former Tottenham manager said his side "murdered" Fulham in the second half of the defeat, and he could not see anything other than a QPR win as the match progressed.
"[The first half] was an absolute disaster," Redknapp told Sky Sports. "Then we got a goal back and absolutely murdered them.
"We missed another penalty and it cost us again. We had enough opportunities to win, and I could only see one winner. When it went to 3-2, I thought we'd win the game, and I wouldn't have take a draw at that time.
"We battered them. I imagine we had twice as many shots as them, twice as many shots on target.
"I was just disappointed in the last 10 minutes when they went down to 10 men, we suddenly stopped passing the ball and started kicking it up to Samba.
"He suddenly wandered up front, and we started lumping balls up to him, and that's not how we play. We opened them up, because we passed and moved the ball.
"When you've got the extra man you've got to make use of it. It's no good sticking a free man up front and hoping to hit him all day.
"You've got to pass it and work your opening and be patient until the right opportunity comes.
"For the last 10 minutes we didn't do that but for the previous 35 we did and we absolutely murdered them."