To Help understand DAX MEASURE | RANKX | Filter Context | Row Context

I am not sure how to debug or search this below issue.
My Requirement in SQL :

With Members_max as (
SELECT MemberID
,Ranked_risk
,Numerator
,row_number() over (partition by memberid order by Ranked_risk ASC) as Rn 
from FactPatient
WHERE QMID in (10,11,12,13)
and Year in (2022)
)

Select sum(Numerator) as Numerator -- A measure for Numerator
, Count(Memberid) as Denominator -- A measure for Denominator
from Members_max m 
where m.rn = 1

 Now what I am trying to do is 
1. Get the Lowest Ranked Risk for each patient for the selected months (User can select One month, Multiple Months or without any filter on Date table.)

2. Fact Patient has One Entry for each member for all months with their ranked risk (Values like 1, 2,3, .etc.), Numerator will have 0 or 1.

Here is the DAX measure which is working as expected without any filters
    

VAR QM2_data =
        FILTER (
            FactPatient,
            FactPatient[QMID] IN { 10, 11, 12, 13 }
        )

VAR QM2_Dataset =
        ADDCOLUMNS (
            QM2_data,
            "Rn", RANKX ( QM2_data, FactPatient[Ranked_Risk],, ASC, SKIP )
        )
RETURN
SUMX( FILTER ( QM2_Dataset, [Rn] = 1 ) ,FactPatient[NUMERATOR] )

The measure is not working as expected when we apply any filter on Date table.

Data sample:

Case 1 :

When No filter applied, it is expected to pick the lowest ranked risk for each member that would be the below table 

and the dax measure for numerator would yield a value of 2.

Issue part:

Now, if we select a month let's say August, 2022.
I was in an assumption that Numerator will be 1 after filter the dataset to Aug, 2022 and then do a ranking to arrive at following temp table tbale to do the sumX.

But Dax expression is not evaluated on top of current filter context(Aug,2022), instead the current filter context is only applied in the last step to filter the data(Bolded) after getting the Numerator value for each month i.e in our example

Thus getting Zero as value rather than 1.

Summary:

I want this DAX expression to calculate the rank on top of current filter expression and do the some.
Could anyone help me get to understand what am I doing wrong?