Set up Nginx Loadbalancer for 3 laravel websites(nginx server)

Hi, everybody!
Don't apply to this job if you don't have any experience in loadbalancer and nginx.
I am going to run a website https://flickerpage.com
In order to split traffics I have 3 vps servers.
One is for loadbalancer, others are servers (running laravel/vue website)

I need to do configuration the loadbalncer to run.
Now I have 3 domains

balancer.flickerpage.com ---- For Loadbalancer

us1.flickerpage.com
uk.flickerpage.com

If you are confiduent to handle this job please apply! Thanks!

Andrii