

I would argue axels came first, and the wheel is a derivative. See the likely methods accepted by (non ancient alien) archeologists for paleolithic to bronze age wonders made from stone; they used logs on the ground as rollers, essentially an axel, it wouldn’t take much of a leap to carve out the majority of those logs to lighten the load, creating a fixed wheel axel, which just needs a semipermanent but smooth rolling attach point to a vehicle or tool to be even more useful.
Its also shit with experience. Just apply to literally everything and hope something in the salary range you want reaches out.