Looking for an old version of sketchup

SketchUp
1

where might I be able to download an old version of sketchup?

2

https://www.sketchup.com/en/download/all

https://www.sketchup3d.de/download/center/#199-179-archiv

3

Looking for a 2015 version of sketchup make

5

have you tried google ? because I fond a truckload of answers there.