Upgrading Drupal

Hi every one, I am trying to upgrade my drupal site currently working with 9.5.11 to drupal 10. Only three contributed modules["drupal/csv_serialization", "drupal/drupal/chartjs_api", "drupal/video_embed_twitch"] are conflicting because their drupal 10 compatible is not available. I am solving this issue using drupal lenient. But I am some how not being succeeded to upgrade to drupal 10. Any help/advice is highly appreciated.Following is the detail.

This is how I am trying to upgrade using composer command and getting results.

Hi,

I have a good drupal site running on a remote server.
I upgraded from drupal 7 to drupal 10, and a company helped me to upgrade.
Their work was done after the upgrade, and they told me they used github for the composer.json, and possible to change stuff.
But drupal 10 is not on my github repository, only possible to change files and custom modules.

How do I upgrade drupal on my remote server using github?

For my own repository it is:
<code>
$ fetch
$ git pull origin master 

Did the upgrade ok but when I go to do database updates it starts out with 24 updates and when it 

gets to 21 it isn't moving forward....I do a manual upgrade using my FTP client....unless it is just taking forever...

the area it is stuck on is: 

I did composer upgrade drush/drush, then upgraded core. (from 10.1.6 to 10.2.0 with dependencies).  It looks fine but when I go to edit a page I get a ckeditor5 error (ckeditor 5 1.0.0-beta5) - upgrading that to beta 6 does not fix it.  When I got to edit a page I get:

The website encountered an unexpected error. Try again later.

After upgrading from 9.5.11 to 10.2, I am not able to save the Performance Configuration at /admin/config/development/performance. On save, the error
'use_internal' is not a supported key
is shown.

Looking at system.performance.yml, it has the following:

Hello,

I want to get my Drupal site up to date, at least to Drupal 9.4 that still supports php 7 Drupal 9.4 dropped official support for PHP 7.3, . 

I installed some modules via UI, so also want to install them with composer now, to get it all managed by composer.

When I go to do a simple

composer update

or