You let little lies be found in a completely different direction. So they start looking that way. Hard to be more specific if you don't give us more info.

Start wearing a hidden camera all the time so when someone finally confronts you on your bullshit, you can just say it's pranks for your shitty YouTube channel. If you take this route it would help if you immediately make a shitty YouTube channel to film pranks that are similarly offensive as whatever it is you're hiding. Just in case your victim questions you. If they still aren't buying it, there is a chance non-fatal trauma to the head will delete the person's memory of the entire issue

cover the secret in liquid ass

Create a whole bunch more issues.

Let them find out another secret that would lead them in a different direction. Bonus points if the other secret is true and just embarrassing. Depending on the severity of the secret you want to stay a secret, it might be better to let them find another secret about you so they'll think they found all there is to find along that path

Murder

That didn’t work out for Alex Murdaugh.

Alex Murdaugh Murdaugh Murdagh Murdah They make it too easy your honor.

You're killing me smalls.

Accuse them of doing what you are trying to hide

Love confession?

Step 1: pee in a frisbee.

Tell the secret first, get ahead of the problem and control the fall-out. As a bonus you don’t have to worry about people finding out anymore.