sudo snap install --classic certbot
sudo ln -s /snap/bin/certbot /usr/bin/certbot
sudo nano /etc/nginx/sites-available/your_domain
# check nginx syntax
```bash
sudo nginx -t
# reload
sudo systemctl reload nginx
sudo ufw status
sudo ufw allow 'Nginx Full'
sudo ufw delete allow 'Nginx HTTP'
sudo ufw status
sudo certbot --nginx -d your_domain -d your_domain
sudo certbot renew --dry-run