is it cocsa?

okay so i’m not sure if im overthinking things but i kinda just figured what cocsa is and it made me think back when i was younger. so when i was 8 or 9, there was this group of girls (all around my age as well) and they would kinda do weird things. the first time i saw them, it was my friends kissing in secret and i didn’t realize it was in a sexual way and i thought it was just friends being loving to each other. they saw me and they told me to be quiet and that i couldn’t tell anyone. i found it odd but i just went with it. anyway then they kinda “invited” me into the group and i found out it was about 5-6 other girls. these girls would all like kiss each other and touch each other but i never realized in what way and they would tell me that if i told anyone, they wouldn’t be my friend anymore so i didn’t. one time one of the girls pulled me in the bathroom and wanted to try something and told me to stay quiet so we wouldn’t get caught and she basically just made out with me and kinda touched me down there a little. another time one of these girls was my close friend and just us two had a sleepover and she was like “hey i wanna try something” so she laid me down on my back, crawled on top of me, and rubbed our “lady parts” together. i thought it was weird but she just kept telling me to not tell anyone so i never did. fast forward to now, im just now realizing how bad that was and that it wasn’t normal but im not sure if i should even hold them accountable considering they were also my age and might’ve just been repeating things they saw. so like i’m not sure if that should be considered cocsa