Google Sheets: Standarddeviation

i got a if formula for standard deviation but i got always an error

=ArrayFormula((STABWN(Berechnungen!C9:C10865;WENN(Berechnungen!A9:A10865">="&DATUM(G4;F4;E4);Berechnungen!A9:A10865"<="&DATUM(G5;F5;E5)))))

so thats the formula above. so its standarddeviation and then the fields with all standarddeviation results from c9 to c10865; next is if function(wenn) that says if the date fields in A9 until A10865 is bigger or equal then the date field that i can enter in the fields G4, F4 and E4 and then the date field again which should be smaller then that what i enter in that field.

here are pics and screenshot of it

berechnungen.jpg

berechnungen2.jpg

in the table with the name "Berechnungen" are in the A column all dates say from 1980 to 2022. in the C column are the corresponding returns to the dates of the column A.
I have again created fields where I now want to filter out the date from column A. These date fields are on G4,F4 and E4 (from period) and G5,F5 and E5 (to period) in the table named "Datumseingabe". There you can enter for example the date from 01.03 2000 to 02.03.2021. Based on this period on G4,F4 and E4 (from period) and G5,F5 and E5 (to period), it should then calculate the standard deviation.