Most apps missing from admin +app option

I just installed nextcloud and I only see a few apps. Most are completely missing. (My installation was on openshift and it seems to use nextcloud fpm)

Please note that I did another installation with podman, using Docker Hub just to test nextcloud, and everything was there - e.g the chat app talk and a lot more.

Is there a way to add apps that are not mentioned in admin menu?
thanks!