Change formula to:
=IFERROR(INDEX(Sheet1!$F$2:$F$29,MATCH(1,(Sheet1!$A$2:$A$29=$C$2)*(Sheet1!$C$2:$C$29=$B5)*(Sheet1!$E$2:$E$29=C$4),0)),INDEX(Sheet1!$F$2:$F$29,MATCH(1,(Sheet1!$B$2:$B$29=$C$2)*(Sheet1!$C$2:$C$29=$B5)*(Sheet1!$E$2:$E$29=C$4),0)))
copied and press CTRL-SHIFT-ENTER button together
and drag down and cross
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