Exclude Cells That Exactly Match In Search

Say I have the following:
Cell A1: male
Cell A2: male
Cell A3: female
Cell A4: male

I want to conduct a search using the value in cell B1, and return the row numbers for which the value in B1 exists.

So my formula in C1 is:
=small(if(isnumber(search($B$1, $A$1:$A$A4)), row($A$1:$A$A4)), row(1:1))

and I make it an array by CTRL+SHIFT+enter

So in B1 I type "male" (without the quotes). From C1 to C4 the values populate as 1,2,3,4

However, I only want the rows where "male" exists, in other words, i want an exact match and I want to exclude those cells that have "female"

I'm wanting:
C1 = 1
C2 = 2
C3 = 4
C4 = blank

Is there a way to do this?