Is Enabling Secure Boot Mandatory for Windows 11 Installation?

The device supports TPM 2.0 but it is not enabled. Configuring Secure Boot poses challenges as it requires completely disabling CSM compatibility mode in the BIOS. Attempting to boot in UEFI-only mode results in a black screen issue with the graphics card. Please clarify: 1. Is Secure Boot an absolute requirement for installing Windows 11? 2. How can the black screen issue with the graphics card in UEFI mode and the difficulties in configuring Secure Boot be resolved?