I am not very sure how the proxy provider, or any of it for that mater, works. My plan is to start with Sonarr through Authentik. I have read the documentation a few times and it still inst making sense to me. The initial setup I have is Cloudflare --> Nginx --> Sonarr. Cloudflare to hide my IP, Nginx to expose services, upgrade to https and well, be a reverse-proxy to Sonarr which is available at https://sonarr.company.com. I tried to set up the Authentik between Nginx and Sonarr but that does not seem to be right in my mind (Or work). Is the correct way to do such a thing to outright replace Nginx with Authentik and forward 80/443 to 9000/9443 respectively on Authentik? If that is then the case, can Authentik handle the SSL certs with cloudflare for multiple domains (companyA.com/companyB.info)?

Thanks