Changing password conundrum

Maybe you should go to this address: https://appleid.apple.com/
It's the Apple ID.

Go and click in the first blue button and enter your Apple ID with your password.

Once you've entered go to "Password and security" Tap

You will see something like this: "Answers to your security questions."

There are blue links that say: "Do you not remember the answers?" or something similar, just click on and follow the steps.

Welcome to the Apple community.

If you are unable to remember your password, security questions, don’t have access to your rescue address or are unable to reset your password for whatever reason, your only option is to contact Apple ID Support, upon speaking to an operator you should explain that your problem is related to your Apple ID, this way you will not be charged for assistance, even if you don’t have an AppleCare plan.

You will need to show patience with the procedure and be prepared to demonstrate without question that the account belongs to you. Don’t expect access to be restored immediately and if you aren’t the owner of the Apple ID registered to the device the account won’t be reset.