Good day!
For what I've understood, you own a VPS on Hostinger and you need to setup a domain, install a SSL certificate and Make site live. It's quite simple, I will be glad to help you get it done.
I myself, own host my websites over there so I am very familiar with that environment (services) and their UI.
I'm a System Administrator (Linux/Windows) and I've worked on very challenging projects where I designed, installed, managed and troubleshooted Linux/Windows Servers (Apache/NGINX, SQUID, BIND, SAMBA, PROXY, EMAIL, Open VPN, etc.). I am also a Web Developer.
Please feel free to contact me, if you need more details about my approach.
Thank you for this opportunity; I hope to speak with you soon.