Static files only served in debug = True but not when False

I have followed the setup procedures here https://www.digitalocean.com/community/tutorials/how-to-set-up-django-with-postgres-nginx-and-gunicorn-on-ubuntu-22-04 and my Django app is running but whenever I turn debug = False it will not load my static files.

Below is my nginx configuration:

server {
    listen 80;
    server_name server_domain_or_IP;

    location = /favicon.ico { access_log off; log_not_found off; }
    location /static/ {
        root /home/sammy/myprojectdir;
    }

    location / {
        include proxy_params;
        proxy_pass http://unix:/run/gunicorn.sock;
    }
}

and my settings.py:

STATIC_URL = 'static/'

STATIC_ROOT = os.path.join(BASE_DIR, 'static')

STATICFILES_DIRS = [os.path.join(BASE_DIR, 'etal/static')]

I have tried my best, researched a lot online, and followed many links but still fruitless.