OpenObserve might be what you're looking for
I was previously leaning torwards VictoriaMetrics and VictoriaTraces (I will need both) but I think that OpenObserve is even simpler. Later I found Gigapipe/qryn https://github.com/metrico/gigapipe
Does OpenObserve ships something to view traces and metrics? (it appears that Gigapipe does). Or am I supposed to just use Grafana? I want to cut down on moving pieces.
ClickStack also looks promising.