So what would you have instead of the right to private property?
Do you think that government derived from the consent of the governed is equally vague?
I'm not persuaded by the argument that taking one part to the extreme resulting in issues makes the whole thing invalid. To adapt your metaphor, you can press the clutch and shift a car into 1st on the freeway. Many bad things will result. This isn't an argument that cars are fundamentally flawed, but that you shouldn't do the bad thing.
to have more Liberty for more people you have to limit the rights of private property is various areas
Totally agree. That's not a contradiction to the concept of a right to private property, that's an invitation to a more nuanced discussion about what the management of property should look like in society.