I was a two decade user of AutoCad LT, which I owned legitimately. When it required updating for Windows 10, the company was dishonourable, and tried to extort $89 a month from me to keep using what I had already paid for. I would have paid something for an upgrade, but not that! They lost my loyalty, and business.
I am now a very satisfied user of Dassault DraftSight, and am happy to recommend it. It's $149 per year. It works extremely similarly to AutoCad LT, an in some cases better. I started using it with no tutorial needed, based upon my AutoCad LT experience. I have designed several buildings on it, and am entirely happy with it. It has capability far beyond my needs and skills. AutoCad certainly missed a business opportunity with me!