This is the most common way to "download" your work for offline editing without installing heavy software.
You can enable offline access through your browser settings or by installing the official desktop sync tool. Method 1: Browser-Based Setup (Recommended) google docs offline download for pc
Check the box next to : "Create, open and edit your recent Google Docs, Sheets and Slides files on this device while offline". This is the most common way to "download"
For a more integrated "offline download" experience, you can use the application. Work on Google Docs, Sheets, & Slides offline - Computer & Slides offline - Computer