While I haven’t done it with iNaturalist data, if you are trying to start doing data analysis on large datasets I suggest learning some python. Packages in python such as Numpy, Pandas, Scipy, Scikit-learn and Matplotlib go awfully far for data analysis.
I suspect it is possible to use pyinaturalist and the API reference for getting data out of iNaturalist as well, but it seems like you were already able to extract to excel already.