She was falling on her face while trying to do a handstand.

She is falling in line to buy concert tickets.

He is falling on a grenade to save his comrades.

He is falling on his sword to protect his reputation.

She is falling back on her old habits.

The economy is struggling, with the bottom falling out of many industries.

She is falling between two stools by trying to please both her boss and her colleagues.

She was falling flat on her face while trying to ride a skateboard.

The comedian's jokes were falling flat with the audience.

She is falling victim to his manipulation.