App getting killed in Android 11

[yashnama2]

i am using Vivo Android 11 device, my app is getting killed in 5 minutes as soon as i removed it from recent apps, and it's not restarting the service on it's own like it should.
In my other devices running android 14, the service is working properly in background and if the service stops due to doze mode, it's restarts automatically on it's own.
But don't know why it's not restarting in android 11 in doze mode. I also disables the battery optimization using FlutterForegroundTask.requestIgnoreBatteryOptimization().