If you can see this page, your Nginx config is working and the web root is correct.
Important:
You need to convert
/var/www/tickrtrend.com/index.html_
to
/var/www/tickrtrend.com/index.html
and then reload Nginx.
Example commands:
mv /var/www/tickrtrend.com/index.html_ /var/www/tickrtrend.com/index.htmlsudo systemctl reload nginx