Maintain your standards & be yourself & ignore the rest. It will work out in the end & you will be glad you did. If you have to lower your standards to be accepted by a particular group, they aren't the type of people you really need as friends!
I'm not sure what part is not going well but if it's with friends - you've gotten a lot if good advice. Just remember that high school is such a short part of your life and things DO get better! good luck