Recycler View shows identical items

I have an arrayList<> of strings and I added 10 strings to it.

private val names: ArrayList<String> = arrayListOf()

These are the strings added

[G.I. Joe: The Rise of Cobra, Creed 2, The Equalizer 2, Ride Along 2, Mission Impossible, Mission Impossible II, Mission Impossible III, Mission Impossible: Ghost Protocol, Mission Impossible: Fallout, Suicide Squad]

I have a recycler view with its adapter as follows:

class MovieSeriesAdapter(
    private val movie: MoviesInSeries,
    private val movieNameList: ArrayList<String>?,
    private val restMoviesPosition: Int,
    ): RecyclerView.Adapter<MovieSeriesAdapter.ViewHolder>() {

    class ViewHolder(binding: SeriesMoviesItemBinding): RecyclerView.ViewHolder(binding.root) {
        val mainThing = binding.mainThing
        val tvMovieNameAndYear = binding.seriesMovieNameAndYear

    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
    return ViewHolder(SeriesMoviesItemBinding.inflate(LayoutInflater.from(parent.context), parent,         false))
    }

    @SuppressLint("SetTextI18n")
    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        if (position % 2 != 0) {
            holder.mainThing.setBackgroundColor(Color.parseColor("#E8E8E8"))
        }

        val RestMoviesList = Constants.getRestOfSeriesMovies()

        var targetPosition: Int = 0
        when (movie.originalMovieName) {
            "G.I. Joe: Retaliation" -> targetPosition = 0
            "Creed" -> targetPosition = 1
            "The Equalizer" -> targetPosition = 2
            "Ride Along" -> targetPosition = 3
            "Mission Impossible" -> targetPosition = 4
            "Suicide Squad" -> targetPosition = 9
            "Venom" -> targetPosition = 10


        }


        val targetMovieName = movieNameList!![targetPosition]


        holder.tvMovieNameAndYear.text = "$targetMovieName ($targetMovieDate)"
    }

    override fun getItemCount(): Int {
        return 5

}

The thing is that sometimes I need the recycler view to show 5 items, as in the case below. For Example, I have 5 movies of mission impossible and I want to show them. But the targetPosition is an integer variable of only one number. I tried creating an array list of only the mission impossible movies but it showed identical 5 items with all of the data in one item. How do I make it that when I need 5 items to be displayed, each item should get a diffent value from the name array list.