While you cannot have a true portable AutoCAD, you can create a using legitimate tools. This is not "one-click" but works for professionals who need mobility.
If you are using a 32-bit machine, the last officially supported versions were AutoCAD 2019 and earlier . 2. Risks of Unofficial "Portable" Versions Autocad Portable 32 Bit
What’s offered online is either non-functional, illegal, or dangerous. Instead: While you cannot have a true portable AutoCAD,