Jesus christ why haven't I done this sooner...thanks for that

I'm still completely new to trading, and only mess around with a small amount (that's been designated for trading only, so no depositing if I do lose).
...but even though most exchanges have their own tools, I've been looking for a better solution - and I use that solution (Excel) every day!
Don't laugh...I'm the one admitting all this

I won't laugh at all. You'd really be surprised how many people trade without metrics of their own. I have no idea how they can ever make a substantial profit without math.
Most people don't make a profit at all (despite what they may claim), and they certainly don't make a substantial profit.