Dont go to prison pve nor void servers, you wont get anything from there. Just go to a smaller default/apocalypse server which has ≤15 max player. You will rarely meet high ranks who always steal your kills there. Just enjoy the game :]
- help your teammates(if they get pinned by an edgar or leaper)
- kill dangerous zombies first, so they wont backstab you later on(like leapers, edgars, swarmers, those are top priority)
- bring vitamins and firevest even if youre broke. They will increase your chance of survival tremendously. Defib is also a recommended thing to bring as it can give you/other people a second chance, so they wont be zombies.
- keep your distance from special zombies, unless you know how to deal with them. You might get one shotted by a a brute or an elm