I was talking to this girl on insta and we talked for a bit until she wanted to trade nudes and I agreed. She sent me her stuff and I only sent a selfie but half my face and then I sent a nude pic but only of my junk... she then screenshot the convo and my list of followers on insta and said they'll send it to people if I don't comply in 30secs. 30 secs went by and she posted on a group of 14 people and say they'll send it to more people if I don't pay them. I didn't engage so I block the account immediately and reported the screenshots from the group chat. Then I went on to my story and say that I got hacked so I can save myself the embarrassment and say they used my account and to not open any messages about me. I'm in the process of deleting my account to make a new one and I reached out to those that were in that group chat and one of them say they didn't get anything so I'm kinda relieved but still... they have a list of followers. What else should I do? I know that if I ignore them and block them they will eventually give up but I just want to make sure that's true....

P.s. the people that were in the group chat followed me back on my new account so I'm starting to think they may just not seen it or they thought it's a spam and delete it