Confusion in kube config files

General Discussions
1

Cluster information:

Server version: v1.30.0
Client version: v1.29.3
Host OS: Ubuntu 22.04
CNI and version:
CRI and version:
Using KIND

I am using the default cluster kind-kind which is created when we use the command

kind create cluster

Now there are 2 config files

  1. ${HOME}/.kube/config
  2. /root/.kube/config

then when i run the following command
sudo kubectl config set-context my-context --namespace=mystuff
it changes the ${HOME}/.kube/config file

But when I run
sudo kubectl config delete-context my-context
I get the following error
error: cannot delete context my-context, not in /root/.kube/config

Why is it happening?