There are some such as D3.js, and some Python libraries such as Plotly, Bokeh, Matplotlib, etc but I’ve not used them. Another source may be free analytics apps. But it may also be worth seeing if you can’t import your data to something like Samsung Health as the upload does also strip out most normal metadata that an actual app is reading the whole time. Otherwise this app may be an alternative too with some built-in analytics at f-droid.org/en/packages/de.tadris.fitness/.