accused of voyeurism on instagram

Hey guys I’ve been thinking abt this for a while and I don’t really know how to let it go. Almost 4 months ago on February 18th I was invited to this weird hard rock show at the time I didn’t know what that was until I got there. They were playing insanely loud and aggressive music people were in a big ass circle fighting each other and all types of other crazy things u can imagine. Long story short I went to the bathroom not knowing that this place allows men and women to use the same bathroom because they believe in gender identity and all that kind of stuff. So I went to use the bathroom and take a lil smoke break but here’s where it gets bad for me. I had my phone in my hand and I stretched and maybe my phone went over the other stall for a second idk but there was a girl outside the stall who said “open the door” I opened the door after I already finished using the bathroom and all she said was “I saw that” then I said saw what? She repeated herself again and I said idk what ur talking abt and I walked out and that was the end of it, it was literally a 10 second conversation me and this girl had. The next morning I was just scrolling on instagram and I found a message this girl wrote saying there was a guy in the bathroom taking pictures of every girl that went into the stall next to me that I was in that night. She said that I was in there for 3 hours taking pictures of everyone and then said I took a picture of her friend and she was trying to find me. Her story didn’t make any type of sense at all but there were a good handful of people who reposted it and actually believed it. I know if she actually believed I had done that she would’ve followed me out of that bathroom and cause a big scene because who wouldn’t do that. She kept that post up for about 24 hours and then posted the following day about how she got some new followers and then proceeded to mention that she’s a learning nail technician. She obviously had no proof that this happened because it didn’t and she didn’t post a picture of me she just posted a description and asked people to help find me. Fast foward to today she hast posted anything else and I doubt she would but that type of accusation is so ridiculous that it kinda hurts. I’m 19 years old and I never have or would do something goofy like that but idk how to completely let this go. Please give me some advice on how to do that.