Coindcx 1% tds ate more of my profits than the market crash did

Thought the charts were my biggest enemy. Turns out it was the spreadsheet.

Sat down end of month to see how much I'd made after bouncing in and out of forty trades. About ₹4,200.

Then I looked at the TDS column. ₹31,000.

Checked the math three times, sure I'd entered something wrong. Nope.

You'd think that's enough to stop trading. Instead I opened the app again the next morning like I'd learned absolutely nothing.