javascript if or statements [closed]

I have the following code:

if (insurance != ("amica" || "travelers" || "national general" || "infinity" || "cincinatti")) {
    amount = "$200";
} else {
    amount = "$300";
}

I'm trying to have my web page display you get $200 if it's not one of the five company above.

Unfortunately, I can't seem to get it to work. I've written it several different ways I started if (insurance === "amica || insurance === "travelers || ... but nothing seems to work.

What am I doing wrong?