Why my routes are not ordered?

in my routes file I use a route group with segment like:

Route::group(['prefix' =>  request()->segment(1) ], function(){
  //routes
});

Normally, my routes are in the order they were written at, but when using the group with request()->segment(1) routes just get disarranged (not just inside the group itself, but all of them), I need to use segment so every customer will have their own slug as the first segment in the URL.

so how can I fix this issue?

via Chebli Mohamed