There seems to be a Magisk Module for MicroG users to enable Android Auto. From here it seems like it doesn’t work on the TCL.
@NotABird’s Module for the Cat worked for me on a TCL that had LiteGapps. When trying it on a TCL with MicroG I ran into a bootloop.
It seems like a required step for getting AA on the Cat was:
If someone can fork the project and add those required steps to the Module I would be glad to test it out.