Why is the data from the form not saved to the database?

Question

Python

I'm doing registration on django, but for some reason I can't save everything to the database. Tried to save everything in two ways.
First, in forms.py I created the form like this:

class RegistationForm(UserCreationForm):
    username = CharField(widget=TextInput(attrs={'class': 'form-control',
                                                 'placeholder': 'Имя пользователя'}))
    email = CharField(widget=TextInput(attrs={'class': 'form-control',
                                              'placeholder': 'Логин'}))
    password1 = CharField(widget=TextInput(attrs={'class': 'form-control',
                                                  'placeholder': 'Пароль'}))
    class Meta:
        model = User
        fields = ["username", "email", "password1"]
        widgets = {
            "username": TextInput(attrs={'class': 'form-control',
                                         'placeholder': 'Имя пользователя'}),

            "email": TextInput(attrs={'class': 'form-control',
                                      'placeholder': 'Логин'}),

            "password1": TextInput(attrs={'class': 'form-control',
                                          'placeholder': 'Пароль'}),
        }

Secondly, the html template is like this:

<form method="post">
        {% csrf_token %}
  <div class="form-group input-group">
    <div class="input-group-prepend">
        <span class="input-group-text"> <i class="fa fa-user"></i> </span>
     </div>
            {{ form.username }}
    </div>

    <div class="form-group input-group">
    	<div class="input-group-prepend">
        <span class="input-group-text"> <i class="fa fa-envelope"></i> </span>
     </div>
            {{ form.email }}
    </div>

    <div class="form-group input-group">
    	<div class="input-group-prepend">
        <span class="input-group-text"> <i class="fa fa-lock"></i> </span>
    </div>
            {{ form.password1 }}
    </div>

    <div class="form-group">
        <button type="submit" class="btn btn-primary btn-block"> Создать </button>
    </div>
    <p class="text-center">Уже есть аккаунт? <a href="">Войти</a> </p>

    </form>

and in views.py I tried to save using this function:

def registation(request):
    if request.method == 'POST':
        form = RegistationForm(request.POST)
        if form.is_valid():
            form.save()
        else:
            error = ''
    context = {'form': form
    }
    template = 'registation.html'
    return render(request, template, context)

As a result, nothing was saved and I tried to do it through the class, but also nothing

class RegisterFormView(FormView):
    form_class = RegistationForm
    template_name = 'registation.html'
    success_url = reverse_lazy('home')

    def form_valid(self, form):
        form.save()
        return super(RegisterFormView, self).form_valid(form)