Module development and code questions

buenos días estimados tengo una consulta necesito pegar el código de google analytics en drupal para medir los datos 

por favor si pueden indicarme como se podría (el modulo ya existe pero esta desactualizado)

desde ya gracias

how to create like this https://www.toyota.com.ph/dealer?

Already done creating a module with form api AJAX for the dropdown (region and city) but i'm stuck on how to display the list.
Should I create a block for the listing on module? Could someone give a proper way or guidde to be followed to create this page

Hello,

We have a site that is currently running on Drupal 7. This site uses Windows Azure blob module(link posted below) to save images/videos media content and this is very major part of our project.

Now, we are trying to migrate the site to Drupal 8/9 and further versions. But, this module seems to be blocker for us.

Windows azure blob D7 module link: https://www.drupal.org/project/azure_blob

Can someone help and suggest us a workaround here.

callBack
suddenly, on the live site I noticed that the callBacks are no longer executed.
I tried locally and the callBack code is executed.
I tried to change the name of the callBack and put an alert but it doesn't report any response.
I didn't understand what could have happened
I have controlalto and it no longer executes any callBack in any content Type
What tests can I do?

A field with multiple select list of taxonomy terms (field A )
A second field is a boolean (field B)
If in field A, 4 or more checkboxes are checked, then field B is true.

I try to achieve this in an ajax callback.

I'm trying to set up a checkout for an offline payment (COD where money is sent separately from the site logic) in order to set up an offline payment gateway. What I need: When the user selects an offline payment manually, completes it, the order should be updated to the "pending" status, but I get the "completed" status.

Perhaps I need to intercept the payment event for the first order with the "manual" method.

I couldn't find any manuals or documentation on how to create my own offline payment module.

Update: