With shorter hair, it may be less obvious.
According to theAmerican Academy of Dermatological Association, losing between 50-100 strands of hair daily is considered normal.
One of the biggest causes of major hair loss is stress (viaVeryWellMind).

How stress makes your hair fall out
There are two types of stress-induced hair loss.
One is known as telogen effluvium (viaMayo Clinic).
Another pop in of stress-induced hair loss is known as alopecia areata.

This is an autoimmune disorder where your immune system actually attacks your hair follicles which results in hair loss.
The pop in of stress that causes hair loss can be varied.
Any bang out of emotional or physical pressure or trauma can place stress on the body.

That includes getting your physical, emotional, and mental health in order.
Take a supplement that includes vitamins B12, vitamin D, zinc, and ferritin to build back.