Sellers across the Maghreb genuinely operate in both Arabic and French, and it's a fair question which one a bio page should be built around.
An honest answer
Linkaty's interface currently supports Arabic and English, not French directly, so the practical primary choice for a Maghreb page is Arabic, it's understood across the entire region, covers Algeria, Morocco, and Tunisia equally, and is what the platform is genuinely built around first.
That doesn't mean French customers are excluded. Product names, prices, and delivery terms on your page can still include French words your audience recognizes and searches for, and any printed material (flyers, business cards, QR code signage) can lean French if that's what your specific local audience expects. English is available too, useful if you also want to reach international or diaspora buyers beyond the Maghreb itself.
Arabic as your page's foundation, French where your audience actually uses it in daily language, that combination covers real ground without pretending the platform does something it doesn't yet.