Hi Jukomi.
Thank you for reaching out here in the Microsoft Community.
In your description, you're having some issues with changing the PIN you're currently using for your Microsoft account.
I note that you are currently unable to revert through the recovery form, and I do understand the frustration and inconvenience of not being able to use the PIN properly at this time.
You should currently be able to log in and access Windows, and you can refer to the following steps to get into Safe Mode
Windows startup settings - Microsoft Support
In Safe Mode, delete the NGC folder
1 Open Explorer
2 Navigate to the following path (if not, please open the hidden folder here in View)
C:\Windows\ServiceProfiles\LocalService\AppData\Local\Microsoft
3 Find the folder named “NGC” and delete it.
After that, start the computer in normal mode and try to reset the PIN.
If you still can't set the PIN, please clear the cache of the TPM chip in the BIOS setup under the guidance of the motherboard manual or device manufacturer, and then try to reset the PIN after that.
Disclaimer: Microsoft provides no assurances and/or warranties, implied or otherwise, and is not responsible for the information you receive from the third-party linked sites or any support related to technology.
Please backup your data before changing the BIOS.
In addition, for your Microsoft account recovery questions, you can refer to the steps below and try to contact our Microsoft Account Security online support staff, who will be able to provide you with more targeted assistance in making some inquiries and handling your account.
Please click on the link below and log in to your Microsoft account at the top right, if you are unable to log in at the moment, please create a new Microsoft account and log in.
https://support.microsoft.com/en-us/contactus
1 Click on this Windows icon

2 Click on “Get Family Support” on the left hand side.

3 Type “account” in the search box and click on “Get Help” at the bottom.

4 Then click on “Contact Support” at the bottom of the screen.

5 Select “Windows” for Products and Services, select “Manage Account Security” for the category, and click the Confirm button.

6 Then choose to chat with a support agent in a web browser

Fill in your email address and a staff member will contact you.
If you see that the current chat is not available, please try again at a time that meets the requirements.
Thank you for your understanding and support.
Best regards,
Zev - MSFT | Microsoft Community Support Specialist