Supply Chain Location Factors- Free Datasets

Im writing my masters thesis and I’m struggling to find decent data for my analysis. As I need my variables by country and year, I found it hard to get free data with a good number of years and countries to have a robust analysis.

My topic is about supply chain location factors, whether cost based or security based/ geopolitical, they’re both relevant to my research question.

These are some of the variables for which I have some very bad datasets with lots of missing data and would like some suggestions: – Logistics performance, or infrastructure performance. – Energy cost, or price of gasoline – Economic policy uncertainty

Any other relevant variables that are accessible for free would also be great!

If you know any free online source for this data (other than World Bank data), please let me know :))

Thanks in advance !!’