I’m 23 and literally haven’t done any real theater. Used to be in ensembles during summer camp bc i didn’t gaf at the time but im considering it as an adult now. there are two auditions in my town next week for different groups and I think I wanna try but I’m super nervous. I need to prepare a monologue for one of them?
Ask them. That will also give you a feel for how welcoming they are to newcomers.
You might consider taking a class before jumping into auditions. Theater groups and community colleges are good places to look for classes. The people that teach are likely connected to the community theaters.