The Protectors suffered their first loss of the 2012 Great Eastern-YEO's S.League season after goals from Aleksandar Duric and Ahmed Fahmie guided Tampines to victory at the Jalan Besar Stadium.
After taking the lead just before halftime, Rovers were content to sit back and defend their lead but despite pushing men forward for much of the game, Home were unable to find a way past a stubborn five-man defence.
"We tried to play our usual attacking football but we just couldn't put the ball into the back of the net," Lee told ESPNSTAR.com's Gabriel Tan at the team's recovery session on Friday.
"In the second half, we even played with five strikers. We tried but unfortunately we didn't succeed."
On the contrary, Tampines coach Steven Tan looked happy for his men to absorb Home's forward pressure and make the most of their chances, a tactic Lee believes worked because of Duric's presence up front.
"Do you think Tampines plays attacking football?" Lee questioned. "They focus on defence and when they get the ball, they just send it straight up to Duric.
"He is powerful and tall, that's why he can score. Defenders in the S.League find it very difficult to mark him.
And despite Thursday's defeat, Lee is insistent he will continue to play attacking football, something he believes is beneficial for Singaporean football.
"I don't want outsiders to watch the S.League and dislike the defensive style," Lee added. "That's why I try to play attacking football.
"If Home United play defensively, the fans won't be interested in watching the S.League."
Home next play Yangon United in the AFC Cup next Tuesday, before they return to domestic action five days later when they take on Harimau Muda.