Hi,
Thank you for posting in our forum.
Are the steps and methods you disabled the same as the steps below
Although Windows makes it possible to manually enable BitLocker encryption for a storage device, BitLocker can also be enabled and configured through the use of group policy settings. This is particularly useful for organizations who have a compliance mandate to enable BitLocker encryption for all endpoint devices.
You can access the BitLocker settings by opening the Group Policy editor and then navigating through the console tree to Computer Configuration \ Administrative Templates \ Windows Components \ BitLocker Drive Encryption. The BitLocker Drive Encryption folder contains ten configurable settings, as well as three subfolders, each of which contain additional settings. You can see the primary collection of settings in Figure
reference:https://specopssoft.com/blog/group-policy-configure-bitlocker/
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Best wishes
Vicky