12% CTR in Admob, should I be worried?

Hello everyone, I have an utility app, I had it without ads, but in the last 4 days I have implemented banner and interstitial ads to it, but all these days CTR has been between 11% and 15% what is insane (I think) what do you think can be the reasons for that CTR knowing that all the code has been implemented correctly and I don't incite users to do click on ads no way?

Thank you.