You could use a VPS with hetzner or scaleway for $5/mo with decent specs, or use an older raspberry pi 2/3. I had metrics services like prometheus, grafana, and

You could use a VPS with hetzner or scaleway for $5/mo with decent specs, or use an older raspberry pi 2/3. I had metrics services like prometheus, grafana, and matomo analytics running on my old pi before I migrated them to a VPS. It's a little more complex, yes, but running a VPS with a few services / docker is not really that complex in the grand scheme of things. It opens you to the world of open source and/or just running long-lived processes. You also could host your site on it, removing a dependency on github offering free static hosting forever.