How to say things are different from one another
"众" stands for everything/everyone. 跟、和、像 or 与 are prepositions. 与众不同 means diff from everything/everyone. There are several ways to say "be diff from something" in Mandarin, for examples: 与something不同/和something不一样/跟something不一样(substitute "something" with the one you want to say in Mandarin). These sentences have the same meaning. However, 像 is seldom used with "不同" or "不一样". "异" also has the meaning of "different/difference", but usually used in a differently way. For your last question, I assume you might mistype one thing, since a more appropriate way to translate would be "没有人想跟同辈不同".