Inside that "box of tricks" is a staking plan/spreadsheet.
You will know it when it has 0.33% of bank, or it's formula, ( mine has changed with cell references cos I change/remove columns things to suit),
=IF(I3="Won",K3/333,K3/333+D3)

in particular the, K3/333 part. That's your 0.33%
or, the exact same type of plan in another spreadsheet where it's changed to 0.5%, of bank.

The 0.33% is safer on test.