I need a Kubernetes expert / image building into kubernetes/rancher

I am bulding 2 clusters in rancher with aws eks. I have 230 dollars/month bugdet. What I would like to do is to setup in rancher one cluster for all my aplications, with different namespaces and everything and one for my devops tools. I have already launched the dev-ops tools, and was able to make jenkins work there. Now for the HA production one, where I want to host my production, development and uat enviorments for my aplications, I am having trouble, mainly with ingress and setiing up the controller so I can deploy my applications with no problems. I tried to deploy a base api which is just the default c# api program there, but when deploying, eveything seems fine but I still have a ssl_unknown certificate issue. I would like help to overview everything I have done and change the configurations so I am able to finish developing my infraestructure and just deploy my codes without problems. Would you be able to help? Best, Gustavo