Hello,
This Dell model only has 6th and 7th generation of CPU options, and Dell no longer provides driver support for Win11, so even if you can get TPM to 2.0, it is moot point, because you will not pass the PC health check still and computer may not perform correctly if you bypass it.
The TPM upgrade instruction for Dell is shared here: https://www.dell.com/support/kbdoc/en-us/000132... But it also clearly says "
Note: Computers that shipped with Intel 6th and 7th Generation processors (i7-7xxx, i5-7xxx, i3-7xxx, i7-6xxx, i5-6xxx, and i3-6xxx) are not eligible to upgrade to Windows 11. Upgrading to TPM 2.0 does not bypass this Microsoft requirement."
Note: This is not Microsoft website/URL, but it is the official OEM/manufacturer site.