This is all not from the sunnah. This is done in some cultures where
they give a sermon before the athan and this is an innovation. After
that, the athan is called and then two khutba of Friday is delivered in
Arabic and then the Friday prayers is offered. After that, people whether
pray 4 Rakah of sunnah in the masjid or leave without praying. They can
pray 2 Rakah at home.