If we did land on the moon, why can't we see the flag, or where we landed, with telescopes?

If we did land on the moon, why can't we see the flag, or where we landed, with telescopes?

            The moon has a diameter of roughly 3000km - smaller than the size of Europe.

You are given this view and an amateur telescope. Now find my father's car.

Can't see it? That's too bad. Try this one:

See that tiny orange speck on the bottom left of the Earth? That's Australia. With the same amateur telescope, try and find my friend’s car.

Can't see it? Oh well.

Here, try this one:

The Apollo lunar module is a little bit larger than a car, so it should be easier to spot, right? With that same telescope, try and find it.