How do we determine the taxes on the contract? Tokens & wETH

I haven't come across a contract that is charging taxes on (ETH/wETH)
how do we determine the taxes and make it to wETH instead of the token as taxes?

I have this modified this code and currently charging taxes on tokens to marketing wallet upon swapping(buy/sell)
But I want to charge wBNB(wETH) instead of the tokens.

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