Sales Data Seasonal Trend Analysis

I have a complete set of raw sales data that needs to be turned into clear, actionable insight. My single objective is to uncover seasonal trends so I can plan inventory, promotions, and staffing more effectively throughout the year... (Budget: ₹750 - ₹1250 INR, Jobs: Data Analysis, Data Analytics, Data Visualization, Excel, Google Sheets, Python, SQL, Statistical Analysis)