No connection between services in Kubernetes - kubernetes

Question

I have a problem with connection between the services. Here is my yaml file for first app deployment
apiVersion: v1
kind: Service
metadata:
name: k8s-to-nginx
spec:
type: LoadBalancer
selector:
app: k8s-to-nginx
ports:
- port: 3333
targetPort: 3000
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: k8s-to-nginx
spec:
replicas: 2
selector:
matchLabels:
app: k8s-to-nginx
template:
metadata:
labels:
app: k8s-to-nginx
spec:
containers:
- name: k8s-to-nginx
image: spyfrommars/k8s-web-to-nginx
resources:
limits:
memory: '128Mi'
cpu: '250m'
ports:
- containerPort: 3000
and here is second
apiVersion: v1
kind: Service
metadata:
name: nginx
spec:
selector:
app: nginx
ports:
- port: 80
protocol: TCP
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: nginx
spec:
replicas: 1
selector:
matchLabels:
app: nginx
template:
metadata:
labels:
app: nginx
spec:
containers:
- name: nginx
image: nginx
resources:
limits:
memory: '128Mi'
cpu: '250m'
ports:
- containerPort: 80
In my app I have two endpoints, here
app.get('/', (req, res) => {
const helloMessage = `Hello from the ${os.hostname()}`
console.log(helloMessage)
res.send(helloMessage)
})
app.get('/nginx', async (req, res) => {
const url = 'https://nginx'
const response = await fetch(url)
const body = await response.text()
res.send(body)
})
I reach root endpoint without problem by ServiceIP:port (this one with LoadBalancer port type) and when I try to reach to second endpoint by ServiceIP:port/name_of_service it makes nothing....
Can you help me please?