Official downloads for the 2019 version have been largely removed from Trimble's main archives. While some third-party resellers like CAD Software Direct
If you are a student or hobbyist, the free web version of SketchUp is sufficient. If you are a large firm using BIM collaboration, you need the subscription model. SketchUp Pro 2019 19.3.253 Full Version
Frequent crashes are reported on newer macOS and Windows versions because it was not built for current system architectures. Critical Concern. Official downloads for the 2019 version have been
Version 19.3.253 is the last version to support macOS Catalina (10.15) natively without kernel panics. If you are running a "Hackintosh" or older Mac Pro, this is your safest bet. this is your safest bet.