anyone can help me, how to write tax fee only in buy and sell not in sendtransaction 🤔

override transfer functions and put it into an if...

if(sender == liqPool) {
_transferWithFees(...);
} else {
_transfer(...);
}

so i must know and setting the liquidity address first?
and update the smart contract using proxy?

depends ur contract, its liquidity generator type contract ?

no it's BEP20 standart

dm i sent you source code

Is it a proxy contract?
(no offense but by the type of question you ask I would stay away from proxy contracts until more experience are there)

right now still not proxy, just in case if need it i still learn it

Ok so afterwards you cant do it ofc if it is not a proxy...

so it depends go with @PrimeDi solution. But to learn do it the hard way and code it for your self :D

thanks i DM you

*but yeah you will need in any case the LP address to identify the buys/sells (my answer was wrong you also need to check if the receiver is an lp... dont know over saw the sell part)

yea the logic is, if the sender or receiver is LP tax will be added if not LP address tax is zero