index of a cell next to the cell satisfiying the condition

[mehmetics]

How can get the index of a cell next to the cell satisfiying the condition, but the cell row ( or col.) is not constant.
Thank you for your help.

[Bo_Ry]

Please try at F2

=IFERROR(INDEX(Sayfa1!$D$1:$I$33,AGGREGATE(15,6,ROW(Sayfa1!$D$3:$G$33)/(Sayfa1!$D$3:$G$33=$C$2),ROWS(F$2:F2)),MOD(AGGREGATE(15,6,ROW(Sayfa1!$D$3:$G$33)*10^6+COLUMN(Sayfa1!$D$3:$G$33)/(Sayfa1!$D$3:$G$33=$C$2),ROWS(F$2:F2)),10^6)-3+COLUMNS($F2:F2)),"")

[mehmetics]

Thank you very much.