How Can I display the product sales per Month using Line Graph

$monthlySales = OrderProduct::selectRaw('sum(amount) as total_sales, month(created_at) as month, year(created_at) as year') ->groupBy('month', 'year') ->get();

        $labels = $monthlySales->pluck('month')->toArray();
        $data = $monthlySales->pluck('total_sales')->toArray();

this is the line graph

var xValues = ['January','Febuary','March','April','May','June','July','August','September','October','November','December']; var yValues = [];

                      new Chart("myChart", {
                        type: "line",
                        data: {
                          labels: xValues,
                          datasets: [{
                            fill: false,
                            lineTension: 0,
                            backgroundColor: "rgba(0,0,255,1.0)",
                            borderColor: "rgba(0,0,255,0.1)",
                            data: yValues
                          }]
                        },
                        options: {
                          legend: {display: false},
                          scales: {
                            yAxes: [{ticks: {min: 0, max:}}],
                          }
                        }
                      });

I tried to use for loop to make a array for the data but still no visible data or maybe I dont have enough data in database?

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