ingress-controller-lb-patch.yaml

apiVersion: v1
kind: Service
metadata:
  annotations:
    load-balancer.hetzner.cloud/health-check-port: "<YOUR-INGRESS-HEALTH-PORT: i.e 31902>"
    load-balancer.hetzner.cloud/name: "<YOUR-LB-NAME>"
spec:
  clusterIP: <Internal-IP>
  externalTrafficPolicy: Local
  healthCheckNodePort: 30787
  ports:
  - name: http
    nodePort: 31902
    port: 80
    protocol: TCP
    targetPort: http
  - name: https
    nodePort: 30193
    port: 443
    protocol: TCP
    targetPort: https
  selector:
    app.kubernetes.io/component: controller
    app.kubernetes.io/instance: ingress-nginx
    app.kubernetes.io/name: ingress-nginx
  sessionAffinity: None
  type: LoadBalancer

I'm sorry guys, updated with the "full" version (minimum required for the service).

Thanks for that!