There are craters on the moon that are billions of years old. Also, we could probably bury tablets and artifacts.
We can barely detect human activity from 50 years ago when we know exactly where it is.
I think we are More likely to spot ancient Geostationary satellites, which will have drifted away from a perfect circle but should still be noticeable. LAGEOS aren’t in anywhere near that high an orbit but should survive 8 million years. They have a plaque on them designed by Sagan should a future civilisation find them.
A similar civilisation may have gone to the moon, but thanks to irradiation and micrometeorites over millions of years. Footprints and tyre tracks would certainly be gone, and while you could land at an Apollo landing site and detect remains of refined metal, it’s unlikely to be something you could see from orbit with our level of equipment, you’d have to get up close and personal, and we haven’t done that.
In other words, it was specifically protected from the elements, in a way intended to be detected only by a species at a certain minimum level of technological development.