I am pretty sure when I tried to do the formula for this I am missing something it's making the rest of my sheet incorrect.

Enter an IF function in cell k2 that will show the absolute value of the returns in the amount column. The logical test of the function should evalute if cell f2 is less than 0. If the logical test is true, "[value_if_true]" argument with the ABS function. Define the "number" argument of the ABS function wiht cell f2. if the logical test is false, the output of the IF function should be 0.