How to make active page button highlight in Django

When switching between users, it remained unclear – which user’s data are you currently viewing?
There was a need to designate an active button that corresponds to the user’s page being viewed. This way it will be easy for me to switch between users as a service administrator.

    checked_user = request.user.id #getting current user id
    userandid = [] #create an enpty list of users
    userslib = User.objects.all()
    if User.objects.filter(pk=checked_user, groups__name='manager').exists():
     for user in userslib:
       userandid.append((user.id, user.username.title())) #if user in group MANAGER - appending list for template buttons
    else:
       userandid = [] # if user not in group MANAGER - list still empty
    q = request.GET.get('q')
    if .........:
        if User.objects.filter(pk=checked_user, groups__name='manager').exists():
            username = user_id
        else:
            raise Http404
    else:
        username = request.user.id
        user_id = request.user.id

#ADD VARIABLES TO CONTEXT:

context = {'user_id': user_id, '...': ...}

Then I send the ID of the current user to the template:

{% for item in userandid %}
    {% if item.0 == user_id %}
<form action="https://reports.evgdev.com/showinfo/{{ item.0 }}">
    <button type="submit" class="btn btn-dark">{{ item.1 }}</button>
</form>
    {% else %}
<form action="https://reports.evgdev.com/showinfo/{{ item.0 }}">
    <button type="submit" class="btn btn-light">{{ item.1 }}</button>
</form>
    {% endif %}
{% endfor %}

I generate buttons with a loop. If the user of the button and the user of the page matched, the html block changes.