Django 4.1 not identifying static file - django

Question

I'm a beginner with Django and have been working a small project that requires quite a bit of styling. However, for some reason, Django isn't picking up on my static css file.
settings.py
from pathlib import Path
TEMPLATES_DIR = Path(BASE_DIR) / 'templates'
STATIC_DIR = Path(BASE_DIR) / 'static'
DEBUG = True
ALLOWED_HOSTS = []
INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
'CalculatorApp'
]
MIDDLEWARE = [
'django.middleware.security.SecurityMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
]
ROOT_URLCONF = 'Calculator.urls'
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [TEMPLATES_DIR,],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.template.context_processors.debug',
'django.template.context_processors.request',
'django.contrib.auth.context_processors.auth',
'django.contrib.messages.context_processors.messages',
],
},
},
]
WSGI_APPLICATION = 'Calculator.wsgi.application'
...
STATIC_ROOT = Path(BASE_DIR) / 'static'
STATIC_URL = 'static/'
STATICFILE_DIRS = [
STATIC_DIR,
]
I double checked my spelling, settings.py directory, checked countless posts and can't seem to find a solution. This is my first time using stack overflow, so I'm assuming I just upload pictures of my code.
Edit: here are is my views.py and urls.py.
# Urls.py
from django.contrib import admin
from django.urls import path
from CalculatorApp import views
urlpatterns = [
path('', views.index, name='index'),
path('admin/', admin.site.urls),
]
# Views.py
from django.shortcuts import render
# Create your views here.
def index(request):
return render(request, 'index.html')