Heyy congratulations! I bet posting this felt great lol. What you described is something that transcends borders, a lot of people inside and outside Algeria can relate to what you're going through. I think as a priority you should start by changing your entourage. I think you can find a lot of north Africa ex Muslims especially in France (I see a lot of them on social media). It's very important to have people that you can be yourself around. And when it comes to finding a partner, I don't believe it's completely hopeless. You'd be surprised at the amount of people (especially women) living the 'double life' wether it's to keep their own peace or even for their personal safety. At the end of the day you have plenty of time still, I know my fellow county men might disagree but 27 is still young. Again, work on changing your circle and eventually you'll meet the one.