So ...

We are going to use a handy plugin called Better Search Replace.

Here it is:

https://wordpress.org/plugins/better-search-replace/

Needless to say, there are many plugins that will allow you to perform Search & Replace actions on your Wordpress website ... However, this plugin consolidates the best features from all these plugins, incorporating the following very important features in one simple, lightweight plugin:

• serialization support for all tables
• the ability to select specific tables
• the ability to run a “dry run” to see how many fields will be updated
• no server requirements!

It's a very small plugin (125 KB), but let's see the usual speed tests ...

Here are my results before installing the plugin ...

... and the result after installing and activating the plugin:

No more comments needed ...

Now let's see how it works ...