Find better alternative for amCharts4

- Get rid of the non-paid logo which ruins screens on mobile
- More space for the charts and their data
- Should be more lightweight
- Should have some chart variety
- Should be free, and no purchase required
- Start research from here: https://github.com/zingchart/awesome-charting

Start by reviewing the charting options in https://github.com/zingchart/awesome-charting and comparing them with the issue's requirements: no paid logo, more chart space, lightweight behavior, chart variety, and no purchase requirement. No files, tests, or entry points are named; done means identifying a suitable free alternative and documenting why it meets these criteria.

Written by the indexing model from the issue text.