If you are a student or teacher, Autodesk provides free one-year educational licenses (renewable) for all major software. You get the full commercial version with no malware risk.
For occasional use, Autodesk Flex tokens cost ~$300 for 100 tokens. An AutoCAD day of use costs 1 token. For less than the price of a dinner out, you can use the software legally for a day. xf-adesk19-x64
If you are running a legitimate design or engineering startup, Autodesk provides free access for up to 3 years through their "Autodesk for Startups" program. You also receive co-working credits and mentorship. If you are a student or teacher, Autodesk