Tottenham captain Hugo Lloris admits they collapsed after Manchester United's first goal for their 3-0 defeat.
Cristiano Ronaldo, Edinson Cavani and Marcus Rashford scored for United to ease the pressure on boss Ole Gunnar Solskjaer.
Lloris told Sky Sports: "I think it was quite OK until we conceded the first goal. In the second half there were too many mistakes with the ball.
"With two or three passes [Manchester United] created chances and they scored two more goals. At points we were too naive in the second half.
"We expect more. We expect more belief. More pride.
"This is not the first time [we have played this poorly], even at home. We expected more against Chelsea.
"The next target is Thursday. We need to reanalyse and find some good.
"It's not a good moment at all. We concede too much, we don't score enough, we don't create enough.
"But I want to believe in the club and myself and my teammates.
"We've only played 10 games in the league, but there's too much up and down. In one game we go through so many emotions.
"We seem to always go down. Confidence is key also."
[On supporters booing at full-time] "When you're a professional you expect critics. The fans expect more from us, but this is not the moment to give up, this is the moment to stick together.
"But also we need to find the solution to move on."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!