then you probably need lxc, not podman/docker. As every tool, kubernetes/docker/podman are useful in some scenarios. They are specifically tailored around an idea of one (main) process per container. But ppl are more like: everything look like a nail when I have a hammer.
Podman is buggy and terrible..... devs should make better applications or optimize. Most apps require a database which ends up being a bottleneck because they dont scale like applications
may be. however not all applications are the same. Sometimes you need just functions, serverless or similar. I wrote apps based on kappa architecture which scale very well (processing and serving tbs of same data for different purposes and apps) Particulary when you can simply just add processors/functions without any server configurations.