How to make dynamic RFM scores that adapt according to a chosen period?

Question

Here, I'm trying to set up an RFM on Power BI. But the problem is that I want the calculation of the scores to be different depending on the period. For example, to go from an annual score to a monthly score, I divided the amount by 12.

I tried different ways but nothing works.

Codes I have tried:

First :

M=

var ddate = MAX('DimDate'[Date])
var annuel = DATESINPERIOD('DimDate'[Date],ddate,-1,YEAR)
var semestriel = DATESINPERIOD('DimDate'[Date],ddate,-6,MONTH)
var trimestriel = DATESINPERIOD('DimDate'[Date],ddate,-4,MONTH)
var mensuel = DATESINPERIOD('DimDate'[Date],ddate,-1,MONTH)

var montant = [M]

return 

IF(
    COUNTROWS(annuel)<= 365,
        SWITCH (
            TRUE (),
                montant <= 10, "1",    
                montant <= 20, "2", 
                montant <= 30, "3", 
                montant <= 40,"4",
                montant > 40,"5"
        ),
            IF(
            COUNTROWS(semestriel) <= 180,
                SWITCH (
                    TRUE (),
                        montant <= 10, "1",    
                        montant <= 20, "2", 
                        montant <= 30, "3", 
                        montant <= 40,"4",
                        montant > 40,"5"
                ),
                    IF(
                    COUNTROWS(trimestriel) <= 120,
                        SWITCH (
                            TRUE (),
                                montant <= 10, "1",    
                                montant <= 20, "2", 
                                montant <= 30, "3", 
                                montant <= 40,"4",
                                montant > 40,"5"
                        ),
                            IF(
                            COUNTROWS(mensuel)<= 30,
                                SWITCH (
                                    TRUE (),
                                        montant <= 10, "1",    
                                        montant <= 20, "2", 
                                        montant <= 30, "3", 
                                        montant <= 40,"4",
                                        montant > 40,"5"
                                )

Second

I created a table with the different periods (annual, half-yearly, quarterly) then:

M=

var montant = [M]
var selection = SELECTEDVALUE('Période de segmentation'[Période])


return 

IF(
    selection = "Annuel" ,
        SWITCH (
            TRUE (),
                montant <= 10, "1",    
                montant <= 20, "2", 
                montant <= 30, "3", 
                montant < 40,"4",
                montant >= 40 ,"5"
        ),
            IF(
            selection = "Semestriel" ,
                SWITCH (
                    TRUE (),
                        montant <= 10, "1",    
                        montant <= 20, "2", 
                        montant <= 30, "3", 
                        montant < 40,"4",
                        montant >= 40 ,"5"
                ),
                    IF(
                    selection = "Trimestriel" ,
                        SWITCH (
                            TRUE (),
                                montant <= 10, "1",    
                                montant <= 20, "2", 
                                montant <= 30, "3", 
                                montant < 40,"4",
                                montant >= 40 ,"5"
                        ),
                            IF(
                            selection = "Mensuel",
                                SWITCH (
                                    TRUE (),
                                        montant <= 10, "1",    
                                        montant <= 20, "2", 
                                        montant <= 30, "3", 
                                        montant < 40,"4",
                                        montant >= 40 ,"5"