This sounds like an excuse about 'Why there isn't any evidence', rather than providing evidence.
The funny thing is that a camp site from a thousand years earlier can be preserved, yet, the camp sites for 2 million people over a 40 year period all get eroded away.
So, you have some round coral clusters..that you are projecting as being 'wheels'. What you can not show is those mounds that are round are actually wheels..
You need something more than 'Oh gosh, that looks like a chariot wheel, therefore the exodus happened and god exists'.