Google Apps Script Automation

I rely on Google Workspace every day and I’m ready to streamline the routine work that still eats up too much time. I need a well-structured Google Apps Script that ties together Sheets, Drive and Gmail so that repetitive steps disappear, data stays in sync and notifications go out automatically... (Budget: ₹12500 - ₹37500 INR, Jobs: API Integration, Automation, Google Chrome, Google Sheets, JavaScript, Python, Scripting, Software Architecture)