I can't ever get a weapon

This question is a little vague, so I'll answer with some general tips that may help.

Firstly, don't try to fight lots of zombies with your fists, get their attention, draw them away from the area, then run and grab what you want. If you're lucky you'll get a melee weapon and can kill off anyone following you.

Next, if you do have to fight them without a good weapon, try to get them in a line following you, then walk away from them attacking as you go (aka, walk backwards). You can usually kill a lot of them without getting hit. (Kind of a simple trick, but lots of people try to stand their ground, which just doesn't work against a horde)

Lastly, don't be afraid of running away. If there are too many zombies to fight, run. You can usually lose the majority of them as long as you keep going away from any towns/bases, then finish off the remaining ones.

It's also worth pointing out that this is a multiplayer game, if you can get a few friends together and work as a team you may also have better luck. (Though obviously that does also mean sharing the loot)

You might be playing an older version of unturned. Usually I try to sneak into a campsite or small area when i first spawn. I get a minimum of some clothing and a non-legit weapon(like a rake or an oar). And, do not try to fight more than 3 zeds with fists (or in fact any melee weapon!). Almost all melee weapons are not very effective! chainsaw exception. I usually start off with a nice sportshot or 20. shotgun:) So yeah, no one will judge you for sneaking in the beginning.