Park experience

I went to a park and it was fine but there's some things I want to know how to handle? Kid's ages six to nine

There were some girls they said do you know what this "bad word" means they were saying cuss words and I felt uncomfortable what would you have told your child when around children who are using the language

Another awkward situation there was a teenager who walked to the park it's like 100 degrees and he has hoodie sweats shorts on top and he was on his phone but there were times his hands were in his pockets he had his hands near his private area and it's like what do I do? I was saying I'm not a therapist I can't talk to him what's going on it was all strange I felt bad for him like maybe he had some disability or problem but how do you talk to teenagers they all seem scary

There's was teenagers who were calling moms hey mama and others saying towards some women they are ugly

There's also a teenager she lives with her mother and she's seventeen has a car, a job and friends from work and highschool starts senior year in August and because of teenage hormones she's been calm having fun and then all of a sudden something upsets her and she's pissed I hang out with her mom and we go out together but it's confusing because one moment the daughter is okay the next she's like mom do I have to drive the car over here so we can leave like all of a sudden she's done hanging out at the lake or wherever and she has friends but decided not to bring them to the lake we told her they can come