In another thread, I see Chrome extensions others use, including 'clear cache' and 'click&clean'. As there's no functionality in Chrome to clear everything on exit, these extensions seem to be the answer. However I'm unsure about a couple of things. Clear cache I have selected in options to clear everything, yet when I run it, then go to my homepage I see in Chrome's tiles still old pages I've visited, so it can't be clearing everything? And click&clean... how trustworthy is the owner of that plugin (www.hotcleaner.com)? The last time I tried that plugin, a few years ago admittedly, it tried to encourage me to install other stuff. I'm somewhat skeptical of a third party company offering such services.
I've used it for years without any issue - When you install the extension I think they offer an additional plugin - but just don't install it if you don't want it