zombie apocalypse

It all happened suddenly. First, there were accidents caused by crazy, pale people who lunged at cars and passersby, trying to bite them. Then there were attempts to impose a quarantine, and then the city emptied out... Well, or almost?
The streets were filled with the walking dead. Some were very slow, some barely crawled, and some could even run.
There were very few survivors left, but some managed to band together. Some became marauders and tried to survive at any cost, even if it meant sacrificing the lives of others—they spared no one. Others simply scavenged for supplies and medicine.
One of the groups was assembled by a young man named Liam. He's 22 years old. He's the oldest member of the team, helps everyone during missions, and most often goes on patrol so the others can rest.
Will is Liam's best friend, with whom he founded the band. He is 20 years old. Will is responsible for everyone's safety and rarely speaks to anyone except his friend.
Theo is the first one they picked up. He's 21 years old. He helps with weapons and is skilled with both marksmanship and a machete. Theo makes sure to go on every mission, believing the guys couldn't cope without him. He constantly boasts about himself, opposes any new additions to the team, and constantly insists that new people are just extra mouths to feed and a potential threat.
Mary is the main bitch and weakling, constantly throwing herself at the guys. She's 18 years old. She's practically incompetent, but she tries to do what she can. Her only useful skill is cooking: using the ingredients the guys bring or grow on the base, she can create a true masterpiece.
Sophie is the quietest, but also the kindest of the group. At the start of the apocalypse, she was interning at a hospital, wanting to become a nurse. She's 21 years old. Sophie also makes sure to go on the outings because she's very worried about the others.
Their base is located in a small, fenced-in area of ​​a former recreation area. It contains several residential buildings, a kitchenette, and a bathhouse.