Should I use Excel Online or swap to WPS Spreadsheet desktop ?

Hi everyone, I am currently a Procurement Intern. My main task is developing a dashboard for the Procurement/Sourcing Manager. I've spent the past week building a Supplier Performance Dashboard using Pivot Tables and charts. The problem is that I am currently using Excel Online, which seems to be missing a lot of important formulas (Power Pivot, Power Query,....). I also tried WPS Spreadsheet, but it doesn't feel as Excel Desktop. Should I ask the IT department for an Excel Desktop license, or should I continue using Excel Online to improve the dashboard? I would appreciate your advice. Many thanks!