Your team has provided face-mask PPV with chest movement for 30 seconds. When is placement of an endotracheal tube strongly recommended?

Your team has provided face-mask PPV with chest movement for 30 seconds. When is placement of an endotracheal tube strongly recommended?

My team has provided face-mask PPV with chest movement for 30 seconds. The placement of an endotracheal tube strongly recommended, When the baby’s heart rate remains less than 100 bpm and is not increasing.