Excel VBA - Data Aggregation

My project requires an Excel VBA solution to aggregate data in order to generate useful insights and reports. The main purpose of the data aggregation is to analyze trends. I already have existing data that needs to be aggregated, so I am looking for an experienced Excel VBA developer to take care of the task. The preferred output format should be in the form of spreadsheets, meaning that any information collected must be presented in a neat and organized format. The Excel VBA solutions must be designed to be flexible and responsive to changing inputs and criteria. To ensure the accuracy of the results, automated processes need to be developed to ensure data quality. In addition, the Excel VBA must be programmed in a way that allows for easy expansion and future updates in the future.