Hi there,
typically, we use official resellers like L3Harris --
https://www.harrisgeospatial.com/Data-Imagery -- or Aerometrex, etc. They have online catalogues that make searching for imagery of specific locations pretty straightforward.
Note that most standard commercial licenses assume in-house/private use only and thus do not allow for redistribution of your compiled aerial or satellite imagery. You'll need to carefully check the respective EULA and, in most cases, request a custom license named something like "Simulation", or "Value-Added", or "Integrator", ... for a hefty surcharge, of course
Don't forget to search for free sources using search terms like "open data orthoimagery" or "open data aerial" for your area of interest. Again, though, carefully check all Terms of Use as free doesn't necessarily mean free to re-distribute.
Cheers, Holger