Need religious advice

Tiffany • TTC#3
My grandpa is Mormon which I don't know what that means but I went to church with him 1 time and I was so confused with there being elders and other things I think but I went with my age group which i think i was 13(7th grade) and everybody was cussing when they were talking. After my age group got out there were little kids like 4 years old running around calling each other "pussy", and "cunt", and other names around the adults and nobody was saying anything. I went to THE CHURCH OF LATTER DAY SAINTS in San Antonio, Texas in Adam Hills side. I'M CONFUSED ABOUT THIS RELIGION AND WHAT ITS SUPPOSE TO BE ABOUT OR IS THIS NORMAL BEHAVIOR.....IDK SO CONFUSED......