I’m stupid!

So at least 4 years ago, when I started puberty, I discovered that I had a darker line like vertically underneath my bellybutton and I thought it was like pubic hair so I shaved it but 🙄but it was only my skin that made it look darker. And now four years later I’m stuck with way much darker body hair at this place(I’m also blond so it doesn’t help my situation). It doesn’t look normal at all and I was wondering if you guys had any ideas of how I could make it normal again (without bleaching it)?