Adding a Date Filter to Google Analytics Advanced Editor in Power BI

Question

I am trying to pull in data from GA into Power BI. However, I am wanting to filter the data BEFORE it comes in. If I use the Transform data tool in Power BI, I am still getting multiple numbers.

Goal is to get Number of Sessions by Day by Channel. However, when I pull it by day, I am getting User X on Day 1, then again on Day 2, and again on Day 5. So they are showing up 3 times, rather than just 1 user.

Is there a way to apply a filter in the Advnaced Editor? Really appreciate the help.

let
    Source = GoogleAnalytics.Accounts(),
    #"40750267" = Source{[Id="40750267"]}[Data],
    #"UA-40750267-11" = #"40750267"{[Id="UA-40750267-11"]}[Data],
    #"238041331" = #"UA-40750267-11"{[Id="238041331"]}[Data],
    #"Added Items" = Cube.Transform(#"238041331",
        {
            {Cube.AddAndExpandDimensionColumn, "ga:channelGrouping", {"ga:channelGrouping"}, 
{"Default Channel Grouping"}},
            {Cube.AddAndExpandDimensionColumn, "ga:date", {"ga:date"}, {"Date"}},
            {Cube.AddMeasureColumn, "Bounces", "ga:bounces"},
            {Cube.AddMeasureColumn, "Sessions", "ga:sessions"},
            {Cube.AddMeasureColumn, "Users", "ga:users"}
        })
in
    #"Added Items"