Some might form small groups with other survivors they come across. By teaming up, they can share resources and skills, like one person being good at finding water sources while another is skilled at fighting off threats. Also, they need to keep a low profile to avoid attracting the attention of enemies or infected beings.
Surviving a fall from 3 stories is highly improbable. When you fall from such a height, your body is subjected to a tremendous amount of force upon impact. Gravity accelerates you to a high speed, and hitting the ground can be catastrophic. There are factors that could potentially increase the chance of survival marginally, like if you were able to somehow break your fall by grabbing onto something on the way down, but realistically, it's a very dangerous situation with a low chance of survival.
It's very unlikely. Falling from 5 stories is a significant height and the impact is usually fatal. There are extremely rare cases where someone might survive due to landing on something that cushions the fall, like a large pile of soft material, but generally the odds are against survival.
Yes, you can survive falling 2 stories. However, the likelihood of serious injury is high. People have survived such falls due to things like landing in bushes or on a sloped roof which can break the fall somewhat. But it's not common and you'll probably end up with broken bones at the very least.
Surviving a 14-story fall is highly unlikely. The impact force and injuries sustained would be overwhelming for the human body. Broken bones, internal bleeding, and severe trauma are common and often life-threatening.
The chances of survival from a 12-story fall are extremely slim. The force of the landing and the speed at which you hit the ground make it highly unlikely to come out unscathed. You could suffer from multiple fractures, internal bleeding, and head trauma.