Seems like you have naming issues… flannel tries to find the node named “gestalt” but I don’t find it among the nodes. Also If the nodes are are sharing same layer 2 network (ethernet frames) like in your simulation I think flannel may be configured host-gw backend instead that is a bit simple to setup… I would give it a try…
Since two years I’m using k3s instead of the full blown distro. It’s composed of a single executable and in my opinion it’s a bit simpler to manage and comes with a local path storage provider out of the box.