Unable to return data to main function from promise

Question

Hi, i am fairly new to node js development and I am trying to build a back-end using node js and i have created a following controller in my code.

exports.bridge_b2b_transfer = function(req, res, next){
    let data = bnb.Transfer_b2b(req.body.bnb_wallet)
    console.log(data)
}

But it returns empty data.

I have tried to converting calls to asyncawait but with no success.and then i tried to use callbacks but grasping the concept is really difficult for me.

httpClient
        .get(sequenceURL)
        .then((res) => {
            const sequence = res.data.sequence || 0
            return bnbClient.transfer(addressFrom, addressTo, amount, asset, message, sequence)
        })
        .then((result) => {
            console.log(result);
            if (result.status === 200) {
              console.log('success', result.result[0].hash);
            } else {
              console.error('Error: ', result);
            }
        })
        .catch((error) => {
          console.error('error :', error);
          return error
        });

Output is printed where console is used but i want to return data to my main controller which is calling this function from another file. But as it is, it doesn't and data is undefined.