Ideally get a pinch weld adapter for your floor jack, and always lift from the reinforced part of the pinch weld where the jack is supposed to go.
https://www.amazon.com/XuSha-Protector-Universal-Slotted-Adapter/dp/B088M1V644/
A jackstand would certainly stop the car from falling, however it would most likely cause some damage. That being said, if you’re not going under the car, and you have a sturdy floor jack, you are fine.