"My Asian Games campaign is over, and I'm hurting," Sindhu wrote to her roughly 3 million followers on social media. "I had my chance. Letting it slip hurts."
The 31-year-old lost to China's Chen Yufei on Sunday, having played both her second and third round matches on Saturday.
"Three matches in 18 hours. Back at 3 a.m. [on Saturday night], out again at 8:30 a.m. [on Sunday morning]. It took a toll," the former world champion and two-time Olympic medalist wrote.
Sindhu thanked fans who had stayed up to cheer her on and said she also felt a sense of pride at competing her fourth Asian Games, concluding the post by saying, "I'll go again."
Sindhu's India teammate H.S. Prannoy had similarly criticized both the packed schedule and other conditions for players like accommodation and logisticts in the province of Aichi and main city of Nagoya in Japan.
"It's cruel beacuse everybody is aiming for a good Asian Games, which comes once in four years," Prannoy said. "To have two singles games in a day, I haven't seen it like that in ages."