Not all posts are displayed. What to do?

Question

Django

I wrote 5 posts in the admin panel, 1 is displayed on the site
. really hard to figure it out.
Here is what is in the project (except venv):

├── db.sqlite3
├── mainApp
│   ├── __init__.py
│   ├── __pycache__
│   │   ├── __init__.cpython-36.pyc
│   │   ├── admin.cpython-36.pyc
│   │   ├── models.cpython-36.pyc
│   │   ├── urls.cpython-36.pyc
│   │   └── views.cpython-36.pyc
│   ├── admin.py
│   ├── apps.py
│   ├── migrations
│   │   ├── __init__.py
│   │   └── __pycache__
│   │       └── __init__.cpython-36.pyc
│   ├── models.py
│   ├── templates
│   │   └── mainApp
│   │       ├── homePage.html
│   │       └── wrapper.html
│   ├── tests.py
│   ├── urls.py
│   └── views.py
├── manage.py
├── mysite
│   ├── __init__.py
│   ├── __pycache__
│   │   ├── __init__.cpython-36.pyc
│   │   ├── settings.cpython-36.pyc
│   │   ├── urls.cpython-36.pyc
│   │   └── wsgi.cpython-36.pyc
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── myvenv
│   └── …
└── news
    ├── __init__.py
    ├── __pycache__
    │   ├── __init__.cpython-36.pyc
    │   ├── admin.cpython-36.pyc
    │   ├── models.cpython-36.pyc
    │   └── urls.cpython-36.pyc
    ├── admin.py
    ├── apps.py
    ├── migrations
    │   ├── 0001_initial.py
    │   ├── __init__.py
    │   └── __pycache__
    │       ├── 0001_initial.cpython-36.pyc
    │       └── __init__.cpython-36.pyc
    ├── models.py
    ├── templates
    │   └── news
    │       └── posts.html
    ├── tests.py
    ├── urls.py
    └── views.py

What is displayed on the site: alexbiryuckoff.pythonanywhere.com/news
mysite/urls.py:

from django.conf.urls import url, include
from django.contrib import admin
urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^', include('mainApp.urls')),
    url(r'^news/', include('news.urls')),
]

news/urls.py:

from django.conf.urls import url
from django.views.generic import ListView, DetailView
from news.models import Articles

urlpatterns = [
    url(
        r'^$',
        ListView.as_view(queryset = Articles.objects.filter(id = 2).order_by("-date")[:20],
        template_name="news/posts.html")
    )
]

news/templates/news/posts.html:

{% extends "mainApp/wrapper.html" %}

{% block content %}
    {% for post in object_list %}
        <a href="/news/{{post.id}}"><h3>{{post.title}}</h3></a>
        <h5>{{post.date|date:"d-m-Y"}}</h5>
        <p>{{post.post}}</p>
    {% endfor %}
{% endblock %}

news/models.py:

from django.db import models
class Articles(models.Model):
    title = models.CharField(max_length=120)
    post = models.TextField()
    date = models.DateTimeField()
    def __str__(self):
        return self.title

news/admin.py:

from django.contrib import admin
from news.models import Articles
admin.site.register(Articles)