https://www.bleepingcomputer.com/news/microsoft/how-to-bypass-the-windows-11-tpm-20-requirement/

Microsoft now requires a computer to have a TPM 2.0 module to install Windows 11. However, new Registry entries have been discovered that allow you to bypass the TPM requirement and minimum memory and secure boot requirements.

With Windows 11, Microsoft added new minimum system requirements that all devices need to have a TPM 2.0 security processor to power some of the operating system's security features.