idk what my nationality is anymore

I was born in Spain but I moved a lot during my childhood. I think I lived in Spain until I was 5 or so and then I moved to France, so I had to learn to speak French obviously. I lived there for a big part of my life and did a lot of my schooling there too, so I was raised among French people and I'm a thousand times better at school in France (writing and all that stuff). And now I've moved back to another country (I don't even know the language) and my friends like teasing me calling me French (it's not that I don't like French people but they irritate me). My mother is French and my father is Argentine (can I be considered Latina?) I'm losing my accent and I feel like I'm getting worse and worse at Spanish and I barely know stuff about my culture. Now when people ask me my nationality I don't even know what to answer anymore, any advice or opinion?