Why in my city only three women and five men are able to dance tango?

There are tango practices in tango clubs .. but on these practices, people tend to dance in pairs .. and this is harmful, especially for beginners! Even if they are dancing with an advanced partner, this is not always helpful (although of course it is much more useful than dancing with the same beginner)
Because to dance is to walk, and you have to learn to walk correctly and separately .. what our newcomers do not do.
Beginners need to do this in practice .. then they will probably start dancing one day.