Autodesk provides official options for users to use their software legally without risk:

: You can download a 15-day free trial of the latest version of AutoCAD directly from the official Autodesk site to test its features.

: A simplified, web-based version of AutoCAD is often available for basic viewing and editing of DWG files. Official Product Keys for AutoCAD 2019

: Students and educators can download a fully functional Free Student License that is valid for one year (and can be renewed while eligible).