How to get all active shipping methods for our custom store in magento 2

[arjunkumar9fce]

We are trying to get using the below code but it's returning only the default store shipping method and we need to get our custom store FedEx shipping method

$methods = [['value' => '', 'label' => '']];
        $carriers = $this->_shippingConfig->getAllCarriers();

        foreach ($carriers as $carrierCode => $carrierModel) {
            if (!$carrierModel->isActive() && (bool)$isActiveOnlyFlag === true) {
                continue;
            }
            $carrierMethods = $carrierModel->getAllowedMethods();

            if (!$carrierMethods) {
                continue;
            }
            $carrierTitle = $this->_scopeConfig->getValue(
                'carriers/' . $carrierCode . '/title',
                \Magento\Store\Model\ScopeInterface::SCOPE_STORE
            );
            $methods[$carrierCode] = ['label' => $carrierTitle, 'value' => []];
            foreach ($carrierMethods as $methodCode => $methodTitle) {
                $methods[$carrierCode]['value'][] = [
                    'value' => $carrierCode . '_' . $methodCode,
                    'label' => '[' . $carrierCode . '] ' . $methodTitle,
                ];
            }
        }

Any help would be highly appreciated