So the typical way to rig this would be what you tried before, where the legs are each independent and all the leg tags (toe, ankle, heel, knee) go on that layer group itself. An example of this working is Chloe on the homescreen - if you uncheck Initial Foot Pinning under Limb IK she should work as expected with body tracking. I would compare your rig to hers and see what happens.
It's also possible something with the different views is also conflicting with this - for example, I noticed 5 views and 4 head tags. I would try a copied version where you delete all of those in CH and see if it makes any difference.
If all else fails, please File > Export > Puppet, and upload/share your .puppet file (via Google Drive, Dropbox, Creative Cloud, etc.) here or via DM so we can take a closer look.
... View more