Hi Julie, here's the global seed directory of plants for change. There were some in the Mediterranean.. Don't know if they'll ship to Algeria...
global seed directory app is at one third down, it's a map of the world you can zoom in at
If you're from Algeria, maybe some family in France could bring seeds of Pascal Poot his shop in the south. He grows without (almost) watering in one of europes hottest and dryest pockets. Everything that dies, he considers a win, so it won't contaminate the gene pool any longer.
You're welcome to join GoingToSeed for free, a collection of
landrace freaks surrounding
Joseph Lofthouse's philosophy, i'm a member of myself. That's a fascinating figure who's worked out to breed your own seeds from where there aren't any... In his case, because plants would not have time to grow seeds in the three month period of no frost in his mountainous dessert... So he had to work on creating his own.. Very rapid growing plants he selected for...
I'd be happy to try to introduce you there as a first member in Africa as far as i know. Just PM me. It's no guarantee, you know, but maybe others will join later and then exchanging could be easier, within Africa. And there's a world of information from plant breeders over there, i know one man that knew Ethiopian farmers..
There's South Africa which has some seed shops based on European varieties.
Anyway there's some options.
Hope this helps.