Honestly I wouldn’t stress it, ai detectors are so unreliable it’s crazy. People have legit put books that were written in the 1800-1990 and it said it was ai, the one I clearly remember was Frankenstein being flagged as ai. And I’m pretty sure the us chart was also flagged as ai. The moment u have good structural writing it will say it’s ai. I think people forget that ai is based off of humans, ai is the one copying not the other way around. Your writing is good and honestly I don’t feel like it’s ai like it’s not soulless, idk what happens or who accused u of ai but it’s clear they never actually stumbled on a story written by ai cause its very clear. Don’t let things like this discourage you, and don’t try to evade ai detectors cause its impossible they’re extremely unreliable, not one of them is legit. I hope this helps even a little bit, have a great day !!