Thailand coach Worrawoot Srimaka remains confident that his team will reach the 2022 AFC U23 Championship.
Thailand will play Laos in their second Group J game in the qualifying round in Mongolia on Thursday after being held 1-1 by the hosts on Monday.
Malaysia, who lead the group after their 1-0 win over Laos, will face Mongolia today.
The 11 group winners plus four best runners-up join hosts Uzbekistan in next year's finals.
"We are ready for the match against Laos," said Worrawoot.
Thailand scored an early goal against Mongolia and then sat back to defend the lead.
The Young Elephants were punished by the hosts who equalised with 15 minutes remaining.
"I have told our defenders to be more careful as we made several mistakes in the previous game," Worrawoot said.
"In a three-game tournament, every game is pressure-packed. I am confident that we will play better than we did in the previous game.
"If we beat Laos, I am sure that we will qualify for the finals."
Wanchart Choosong has been ruled out for the tournament due to a fractured ankle while Benjamin Davis is nursing an injury and not available for selection for today's game.
Thailand manager Nualphan Lamsam said the team could only train together for six days before the first game and this affected their performance.
Nualphan blamed the artificial pitch for the injuries to Wanchart and Benjamin. She promised to give the team one million baht if they defeat Laos.
Thailand will meet Malaysia in their final Group J game on Sunday.