no me gusta los personas
would gusta be gustan instead?
Yes
also is " nos gusta" right?
Or is it always "nos gustan"?
In Spanish, the verb "gustar" is a bit different from how we use verbs in English. It is used to express likes and dislikes, but the construction is different.
When using "gustar," the verb agrees with the thing or things being liked, rather than the person doing the liking. So, the verb form used with "me gusta" is correct in this context.
However, if you were talking about several people, you would use the plural form "gustan." For example, "no me gustan las personas" means "I don't like people."