, "1", : -
=IFERROR(INDEX('Activity Data'!$A$2:$A$10, MATCH(0, SIGN(COUNTIF($C$36:C36,'Activity Data'!$A$2:$A$10)+('Activity Data'!$C$2:$C$10<>"Football")+('Activity Data'!$B$2:$B$10<>18)), 0)),"")
( 10 , )
SIGN , : -
=IFERROR(INDEX('Activity Data'!$A$2:$A$10, MATCH(0, COUNTIF($C$36:C36,'Activity Data'!$A$2:$A$10)+('Activity Data'!$C$2:$C$10<>"Football")+('Activity Data'!$B$2:$B$10<>18), 0)),"")

: -
=IFERROR(INDEX('Activity Data'!$A$2:$A$10, MATCH(1, (COUNTIF($C$36:C36,'Activity Data'!$A$2:$A$10)=0)*('Activity Data'!$C$2:$C$10="Football")*('Activity Data'!$B$2:$B$10=18), 0)),"")
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