I’ve setup the default AR template for Unity 2021.3.21f1 (Then also did the same for 2022.1.24f1)
But sadly the cube is not appearing when I point my camera at the reference image,
I’ve also added the image tracking manager to the AR Session Origin And filled all the parameters

Even with a custom script to debug something when the Tracker detects the reference image, its still not working
Please do not mind the reference image as it is just a placeholder for now.

The reference image you provided is very likely undetectable by ARCore. Refer to Google’s Best practices for more information on selecting a better reference image: