Loki / Promtail
Loki requires Promtail.
Loki is available as a Grafana plugin, and includes the binaries for Promtail. Also, the plugin is included with the installation, so no additional installation is required:
https://grafana.com/grafana/plugins/loki/?tab=installation
Tempo
Tempo is included in Grafana by default:
https://grafana.com/grafana/plugins/tempo/?tab=installation
Prometheus
This is available as a Cloudron package