In many ICAO countries you can just go and fly with an instructor for an "introduction" flight or "fan flight" as they call it....., but if you want those hours to count towards your commercial certificate etc....., you will need to have a conversion done for the country you are flying in....., besides the fact that it would be difficult, it would be costly..!
I don't think that there is anyplace on the planet where you can fly cheaper than in the US.
Just get your conversion into the FAA certificate and go fly your hours there, that's your best option.
Good luck