I'm using G I want to create a custom user that have only access to specific namespace, I used this yaml:

---
apiVersion: v1
kind: ServiceAccount
metadata:
  name: develop-user
  namespace: develop

---
kind: Role
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: develop-user-full-access
  namespace: develop
rules:
- apiGroups: rbac.authorization.k8s.io
  resources:
  - services
  verbs: ["get"]

---
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1beta1
metadata:
  name: develop-user-view
  namespace: develop
subjects:
- kind: ServiceAccount
  name: develop-user
  namespace: develop
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: Role
  name: develop-user-full-access

so I get a certificate and added to my kube config, after I switched context to this new service account and figured out that I still have access to everything :(
Why did it happen and how to fix?

my kubeconfig (pastebin copy: https://pastebin.com/s5Nd6Dnn):

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: %certificate-data%
    server: https://animeheaven.nyah
  name: anime-cluster-develop
contexts:
- context:
    cluster: anime-cluster-develop
    namespace: develop
    user: develop-user
  name: anime-develop
current-context: anime-develop
kind: Config
preferences: {}
users:
- name: develop-user
  user:
    client-key-data: %certdata%
    token: %tokenkey%