Correction please,,

Double commas don't exist in English.

Are you a lover of zombie-movies?
I don't like them very much it, but sometimes I do. like it,, :D
I don't like them because I don't believe that zombies are real. They're just something fantasy; something that a script writer made up. Another reason I don't like them, is because sometime zombie-movies often have so much blood and disgusting things, which makes me want to vomit.

If the thing is countable (eg. zombie), use the plural form to talk about it in general. 

However, I still want to watch some films, such as TWD (The Walking Dead),,. The zombies in that are so slow down and stupid, and they can be tricked if you use their blood to "hide" from them. Then there are or the zombies in World War Z. What would happen in real life if those zombies were real and they could run, climb and catch you easily?

Haha... I'm so glad zombies are not real. 

So which type do you prefer? The zombies in The Walking Dead or those in World War Z?

We can use the because we both know exactly which zombies you mean.

Also, have you ever thought, what would happen if a zombies bit a vampires? Would the vampires become a zombie or would the zombies become a vampires????

If you use first conditional (if X [present simple], X will...), you mean that you think it is very likely to happen.  Use second conditional to talk about unlikely or fictional possibilities: if X [past simple], X would...

Hope this helps a little. Also, pay attention to punctuation and phrasal verbs.