It's true on any squad - people are going to disagree. What we all must remember are the various degrees of disagreements and sometimes there are other underlying causes for the friction. Let's talk about each individually.
Frustration can occur in many forms.
Frustration with not getting a stunt, creative lapses, someone not catching onto a new routine fast enough, etc. But think first, take a deep breath and try to help the situation instead of making it worse. If you can't make the stunt go, scrap it for something that hits each time. If you can't think up any more chants that don't look or sound the same as all your others, find other inspiration. Listen to commercials for ideas and catchy phrases for chants.