who should you friend?
i want to friend people, but any people on duolingo except my sister are strangers,so who?
People have different reasons to befriend a person. Some people like to have competitions with people with similar language levels. Others like to follow people who are active in discussions or people who are helpful when it comes to answering (language) questions. There are actually many young people here; maybe you can find someone with similar interests among them.
i can only find people that just started which are always going to be behind me, and people who are way ahead,who are always going to be ahead of me.
Find a thread about finding friends in the section of discussions for the language you are learning. If you can't find a thread there, create one. Write that you are looking for friends on the same level as you. People will find you :)