Crashing with import

yes,  it a subscription. 
I'm not very tech savvy so I'm not entirely sure about the v6 question.

Ok, so you are paying monthly (or perhaps annually) to Adobe.

It is possible that you have v6, if you started your subscription at the beginning if subscription, but never ever updated .

So, you should have an application called the So e Creative Cloud Desktop App (ACCDA).

If you bring that up, mouse hover over Lightroom Classic, what version pops up?

My Lightroom 6 on a Mac keeps crashing when I try to import photos from files. I've tried all the basic suggestions and support. My version is 10.16.

By @Dean0177

Computer crashing is almost always a hardware malfunction or a bad driver somewhere. Computer crashing when importing ... are you importing lots of files, or just a few? Don't answer that, instead give us the exact number of files you are trying to import when you experience the crash.

And also please answer: how large in pixels or megapixels are the original photos you are importing? (Do not tell me megabytes)

A likely possibility is because importing uses lots of CPU, that the computer is overheating because of a cooling system failure somewhere. You need to check to make sure all fans and other parts of the cooling system are working properly, and also make sure that the vents are not clogged with dust and blocked (for example, up against a wall or partition).

I've tried all the basic suggestions and support. 

You will need to specify what you have tried, otherwise you will get much the same back. Many people do not like to spin their wheels around, just to be told Nope, tried that.

My version is 10.16.

What us v10.16? Your MACOS? Was that a beta copy? In fact beta 1, or beta 2, not beta 3, not production v11.0, and why not updated to 11.5.2