Do you use any web ui's for your Linux server? I'm comfortable managing my server using the command line, but I also want a graphical interface that shows an overview of what is running on the server, the way the resources are being used what containers are running and so on. Also file download uploads would be great to have.
What do you recommend which is light and resources and is suitable for less powerful servers with low ram?
So far these are the more interstating tools I've found: (they vary in functionality their provide)
CasaOS Cockpit SartOS Orb Kasm
Just SSH. Every public facing piece of software (I.e. a web interface) adds more complexity for misconfiguration or security vulnerabilities.
You can mount you remote filesystem locally and use your local file manager and text editors to manage most tasks. If you use ansible you can make changes to a local configuration and deploy the state to the server without needing to run anything special on the server side. It is especially effective if you also run docker.
And for monitoring I usually just have a tmux with btop running. Which is fine if you don't need long term time series data, then you might want to look at influxdb/grafana - but even those I would run locally behind a firewall, with the server reporting the data to the database.
I'm not sure why you're assuming public facing. I don't see that anywhere in Op's post.