I looked at superset a few years ago and looked great but not popular enough to trust it. Seems the same state now?
I am not sure what you mean by 'trust it'? As in, does it display the data as it should? It is difficult to find free open source data visualization tools that can run in the browser, that anybody could log-in and use right away. For my personal analytics I use Tableau, connected to the same dataset.
For a tableau open source alternative that runs in browser, you can try graphic-walker: https://github.com/Kanaries/graphic-walker