Shaking car at a complete stop

Did you recently buy this vehicle or did this issue just start?

I have driven a lot of these vehicles and felt what you are talking about. There is a chance that there is a motor mount that is failing. So we should inspect those just to make sure they are not grounded.

The other possible cause would be a vacuum leak. This is rare on this car but it could happen and cause this issue.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

If the mounts are okay and there is no vacuum leak then I suspect this is normal. Clearly I am not driving the vehicle but just the way you described the issue, I have experienced the exact same thing in a lot of these Jeep's.

So that means I am not sure this will be resolved. However, if you have owned this vehicle for some time and this is new then I suspect you will find one of the mounts is the issue. I attached the info on replacing these.