Drupal 8.x

Hello, I'm very new to this process, and just don't understand what I'm doing wrong.  Could someone point me in the right direction?  Any help is much appreciated.

I'm following upgrade instructions from the "Upgrading from Drupal 8 to Drupal 9 (or later)" article in this site, but composer responds with "Your requirements could not be resolved to an installable set of packages"

Here is my terminal output:

Hello, 

Pattern tab:

I have [node:title] in path pattern field. 

I also selected the content type.

Bulk generate tab:

https://ibb.co/02SHVSD

I was expecting to see the node title in url as I add nodes but I do not see the alias in URL. I see the node/number in the address bar.

I also regenerated the url (bulk generate > selected content > regenerate) but I still do not see the alias. 

Updated database.php. 

On my nodes i have a simple text field for preview texts. It was set to 120 characters at once but later i've decided to update it according to some tutorial to 255. There was already something stored when i did, so i hade to do it with code. I wrote an update hook containing this code:

I activated the Media module on my Drupal 9 website.

My website does not use any consent banner:

- I use Matomo for audience analysis with the parameters compliant with the RGPD.
- I use my own share button which supports no cookies.
- I only use contextual affiliate links (it is based on the page viewed, not on the visitor's profile).

I am currently looking for a solution for this third point.

I added a media with a Youtuibe URL in a node with the "Remote Video" media type.

BIG PROBLEM

I have a Drupal 9 site with the Media module enabled.

I have subscribed to the Amazon partner program.

Is there a solution to display Amazon iframe in Drupal? I am thinking of the Media module.

Many websites display the product name with the updated price in real time. I did not find anything to fire this.

My question :

Is it possible to set up Amazon advertising with Drupal 9 and the Media module ?

 i have a drupal 7 block that managed a couple of different pages all at the parent "/product/%" with % being the item id. The other page is "product/%/summary". The only other blocks that I have migrated consist of one template file with one return array to it.

Drupal 7

code in prodcut_page.module: