You are not speaking to Apple here, so you will not get the confirmation you are looking for, we are simply users just like you. If you want to speak to Apple directly, you can do that here:
Contact Apple Support - Apple Support
We can offer assistance on what those charges are for and how they occurred. You will want to check what devices are currently logged into your account by going to Settings > [name on top], and scroll to the bottom. These devices were able to sign into your account with your Password.
On a device that is signed into your account, it requires the user to double click the side button with the amount showing on the screen, followed by verification with the device passcode. So that means if someone else also knows your device passcode, you have authorized them to make purchases. If it was a Free Trial, then you also see the trial period, Subscription start date, Subscription price, and a message that your account will be charged the subscription if not cancelled at least a day before. Cancelling a Free Trial/Subscription is done using this link:
View or cancel app subscriptions on iPhone - Apple Support
You can also get more information about purchases to see what they are for by viewing your Purchase History:
View your purchase history for the App Store and other Apple media services - Apple Support
Hopefully this has helped you determine what the charge is for and able to track down any other users who have access to your account/device. Let us know what you find out in case you need to further secure your account or device.