How to Enable free SSL in Your Domain Hosted on Remote Server or VPS ( only on domain if you have, not in server_ip )

Install Certbot and it’s Nginx plugin

sudo apt install certbot python3-certbot-nginx

Verify Web Server Ports are Open and Allowed through Firewall

sudo ufw status verbose

Obtain an SSL certificate

sudo certbot --nginx -d your_domain.com -d www.your_domain.com -d api.your_domain.com -d admin.your_domain.com -d www.admin.your_domain.com

Check Status of Certbot

sudo systemctl status certbot.timer

Dry Run SSL Renewal

sudo certbot renew --dry-run