If statement Tableau

I require an IF statement in Tableau to find certain people (players) who only played Sports & not Casino

The formulas I have tried are:IF [Bet € for Calculation €]>0 THEN
IF [Product Vertical]="sport"  THEN
IF [Bet € for Calculation €]=0 THEN
IF [Product Vertical]="casino" THEN
THEN [Bet € for Calculation €] END
ELSE NULL
END

I have also tried an AND version

but both come out with errors.

Any help would be greatly appreciated