Belgium "have to win against Iran," who they face in their next game on Sunday, the manager said, as they seek to reach the knockout stage for the first time since 2018. "There are no two ways about it."
Egypt came out strong in the first half, taking a 1-0 lead in the 18th minute with a superb strike from midfielder Emam Ashour, his first international goal.
"We should have been better as a team in the first half," Garcia said.
Belgium equalised in the 66th minute, when Egypt defender Mohamed Hany diverted a cross into his own net under pressure from forward Romelu Lukaku, who had just come on as a substitute.
"I'm happy for him, and when you're an opponent and you see Lukaku coming onto the pitch you're probably quaking in your boots and your level of concern is probably on the rise," Garcia added.
However, Garcia said the striker is not ready to start after only sporadically playing last season for Serie A side Napoli.
Jeremy Doku was substituted for midfielder Matias Fernandez-Pardo in the 86th minute, as Garcia revealed the winger had been struggling with a breathing problem.
Doku has "a little bit of a niggle," he said. "He's got a breathing issue. It's going a lot better, but I think he needed to come off the pitch so that he keeps a little bit of wind in him. A bit of energy for the next game."
Read Flashscore's analysis from Seattle now.
FIFA World Cup 2026
The 2026 World Cup is taking place from June 11th to July 19th in the United States, Canada and Mexico. The tournament features 48 national teams and is played at 16 modern stadiums.
Match schedule and times | Group tables | How to watch the World Cup | World Cup Format | Past winners of the World Cup