Is this code appropriate or a bad practice?

Question

Good afternoon, I am a beginner in programming and in case my problem would be with C# and Windows Forms. I have a screen for reports of a PDV system, and in this report I can select the daily, monthly and annual options (the choice is made through a ComboBox). However, for each of these options I also have 'sub-options', for example, monthly type reports can be to list how much was sold of each product, or to list all sales, for example (this choice is also made through a CombobBox), given that will be launched in a DataGridView. At first, I started using several ifs, but this resulted in a huge chain of selection loops. Something like this:

if(cbxTime.SelectedIndex == 0)//Relatório diário
{
    if(cbxSubOption.SelectedIndex == 0)//Relatório diário de produtos
    {
        //Pesquisava no banco e jogava dentro de uma DataGridView
    }
    else if(cbxSubOption.SelectedIndex == 1)//Relatório diário de vendas
    {
        //Pesquisava no banco e jogava dentro de uma DataGridView
    }
    else
    {  }
}
else if(cbxTime.SelectedIndex == 1)//Relatórios mensais
{
    //uma cadeia de ifs semelhante à do primeiro if.
}
else//Relatórios Anuais
{  }

As I didn’t find it very viable, I tried to replace this solution with something more dynamic, but I don’t know if it was correct. My idea was to create a vector of Dictionary, more specifically a vector of three positions, each representing one of the time bands. Each Dictionary was composed of an index that would be the index of the sub-Combobox and a action, a reference to a non-return function that would execute the code I needed. So I created a function for each of the possible combinations of ComboBox and played in this variable. Within each of them, I performed the actions necessary to play the dice in the DataGridView, something like this:

private Dictionary<int, Action>[] dataGridActions;

public void Form1()//No construtor
{
    dataGridActions = new Dictionary<int, Action>[3]
        {
            new Dictionary<int, Action>()
            {
                { 0, ListDailyProducts},
                { 1, ListDailySales},
                { 2, x},
            },
            new Dictionary<int, Action>()
            {
                { 0, x},
                { 1, x},
                { 2, x},
            },
            new Dictionary<int, Action>()
            {
                { 0, x},
                { 1, x},
                { 2, x},
            },
        };
}

private void ListDailySales()
{
    //Fazia a devida ação
}
private void ListDailyProducts()
{
    //Fazia a devida ação
}

At the time of invoking:

int time = cbxTime.SelectedIndex;
int option = cbxSubOption.SelectedIndex;
gridActions[time][option].Invoke();

It’s all working perfectly, but the question is, is it correct what I did here? All this is just in the form. I kind of read about Strategy to try to do, but I know very well that I didn’t use any of that very much in practice. I would like to know if there is a more correct way to do it, and where I should seek solutions for cases like this in the future, thank you from now.