<layout xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/layout_generic.xsd">
    <referenceBlock name="render.product.prices">
        <arguments>
            <argument name="default" xsi:type="array">
                <item name="prices" xsi:type="array">
                    <item name="final_price" xsi:type="array">
                        <!-- item name="render_class" xsi:type="string">MagentoCatalogPricingRenderFinalPriceBox</item> -->
                        <item name="render_template" xsi:type="string">MyVendor_MyModule::product/price/final_price.phtml</item>
                    </item>
                </item>
            </argument>
        </arguments>
    </referenceBlock>
</layout>

<type name="MagentoCatalogPricingRenderFinalPriceBox">
        <plugin name="MyVendor_MyModule_change_template" type="MyVendorMyModulePluginFinalPricePlugin" />
</type>

<?php
namespace MyVendorMyModulePlugin;

class FinalPricePlugin
{
    public function beforeSetTemplate(MagentoCatalogPricingRenderFinalPriceBox $subject, $template)
    {
        $objectManager = MagentoFrameworkAppObjectManager::getInstance();
        $enable=$objectManager->create('MyVendorMyModuleHelperData')->chkIsModuleEnable();
        if ($enable) {
            if ($template == 'Magento_Catalog::product/price/final_price.phtml') {
                return ['MyVendor_MyModule::product/price/final_price.phtml'];
            }
            else
            {
                return [$template];
            }
        } else {
            return[$template];
        }
    }
}