I did a search for you to see if Nexus has any members in Algeria. There are 13 listed. I don't think any are currently active on Nexus, but it may give you some comfort to know that others have joined this Atheist website at some time. Just so you know, even if you don't know any atheists, there are others out there - somewhere.
Please feel free to comment on the Forum and active discussion groups, and blog on thoughts or events that are important to you. It can be so helpful to have a community of people who share the free-thinking and non-theism that are hard to find elsewhere!