What to do if gate agents refuse to accept my ID? [closed]

I'm a dual national of a North African country and a European country, and for specific reasons I hold a passport of that North African country and ONLY the ID of that European country.

In a future travel I may do, after traveling from Europe to this particular country, I vacation there. For the flight back to Europe, at check-in, I want to only show the European ID because Europe allows entry to all of its citizens with an ID (I will have entered the African country with my North African passport and got it stamped, likewise for exit - this is about checkin not immigration), but the people of this specific country may interact ignorantly and stubbornly, and refuse to let me board the flight despite having the right to enter. They can ask me a Permanent Residency for example, and claim that my ID is not proof for them. How can I convince them that I effectively can? Note, I'm not asking HOW TO TRAVEL WITH 2 PASSPORTS, BUT in this way because of my particular circumstances.