As @funpig mentioned in this subforum recently, Orange France offers a complete line including a French phone number and plenty of data and texts for use in France and the rest of Europe. Register the eSIM, as I have done, and you can keep the phone number and top up as needed on future trips to the Argentina of Europe.
I am just back from Mexico, where the Orange travel eSIM gives you 5GB of data-only for €10.99 for 30 days.
This is much less than AT&T charges for their temporary Mexico roaming plan and much much less than paying-as-you-go with AT&T. iirc AT&T uses Movistar in Mexico, while Orange uses TELCEL.
You can set your mobile services in your iPhone accordingly with the Orange eSIM for data, and everything worked fine -- I still rec'd voicemail messages for my primary phone line, could text and iMesage with everyone I normally do, and could be on google maps with location services for it and other relevant apps, like Didi, on almost constantly, and the data lasted fine.
Let me be clear that the data-only travel eSIM is another Orange purchase, not the main Orange line. I won't register it or top it up (probably) because I don't know when I will next be any farther into Mexico than Tijuana or San Antonio, where AT&T works as it does domestically.