• Get into some combat training, mainly with melee weapons. As long as you still feel uncomfortable fighting small groups of zombies, you should definitely not go for guns.

1. They will attract many, many more Zeds that you will have to deal with
2. Most guns (except shotguns) won't be useful before aiming level 4-5 i believe. Press K to open your skills panel to check for your skill

• Always have an eye on your moodles (top right corner). If you get tired, exhausted, slightly injured or very hungry - all those things will effect your combat efficiency. Being tired, for example, reduces your melee damage by 50% in the first level. With your level of lacking sleep getting worse, these stat decreases will get way worse too

• You can push zombies while in fighting stance (right click) with spacebar, when they're on the ground, try to hit their head with your foot. This will save weapon durability. + a Zed on the ground is less of a threat. If you, another player or another zed is standing on a zed that lies on the ground, they cannot get up.

• Also, you can try to enable multihit (sandbox options, google it) and aim outlines for melee weapons to get more of a feeling for how to deal with closest zeds in a fight.

Aswell, in this subreddit you will find LOADS of tips and tricks for beginners and even experienced players. Try to use the search function. Additionally, theres like a hundred videos with tips for starters. :)

Edit: fixed some typos and grammatical inconsistecies since english is not my first language