The spreadsheet is doing fine right up until it isn't
For buy-ins and cash-outs a spreadsheet is not a compromise. Two columns per player, one subtraction, one total that should come to zero — that is the whole settlement, and it is the part most groups get right. If your game never produces a side pot and nobody wants live stacks, you do not need to change anything and this page is not going to invent a reason for you to.
