How to change product price to custom text Magento 2

I am planning to change product price from
Category view and product page to “coming soon” I have a new product attribute which I have created and I can see that when I edit product page from admin area.
If I enable that attribute the price is meant to change from the amount to “coming soon”

This is my Di.xml file

    <?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <!-- Product page -->
    <type name="MagentoCatalogModelProduct">
        <plugin name="change_product" type="[vendor][module]PluginModelProduct"/>
    </type>

    <!-- Price changed in category level -->
    <type name="MagentoCatalogBlockProductListProduct">
        <plugin name="cataloghideprice_finalpricebox" type="[vendor][module]BlockProductListProduct" />
    </type>

</config>

The category level works perfectly
I can see coming soon, but the issue I am having is product page isn’t changing

Please can someone direct me to the right path.