How can I make an layout action bar back button leads to different locations depends on which fragment of the layout is visible?

Question

I'm tring to make an action bar back button leads to different locations depends on which fragment of layout is visible. I want to make it always back to previous activity despite one case, when going back from one fragment must be proceded by another fragment with info about screen rotation. I tried simple if statement but even when RiderArenaFragment is visible, it goes back to home activity.

    override fun onActionBarButtonClicked(@IdRes id: Int) {
    when (id) {
        R.id.ab_back_btn -> {
            if(RiderArenaFragment().isVisible) setFragment(RiderArenaInfoFragment())
            else finish()
        }

    }
}