Fix the home first
The commonest causes are loose rugs, wet bathroom floors, poor lighting, clutter on the floor, and no grab-rails. Clearing walkways, adding a bathroom grab-bar and a night light, and keeping everyday things within easy reach removes most of the risk before it ever happens.
Support the person, not just the room
Well-fitted footwear, a walking aid used correctly, unhurried movement, and help getting up from bed or a chair all matter. A trained attendant knows how to assist a transfer without pulling on a fragile arm, and how to let the person do what they safely can — keeping muscle and confidence, which itself prevents falls.
Notice the medical causes
Dizziness, new unsteadiness, a drop in blood pressure on standing, poor vision, or a medication side-effect can all cause falls — and these are for the doctor, not guesswork. A caregiver's job is to notice the pattern and flag it, so the underlying cause gets treated.