I have an old Drupal 7 site that I can't seemingly migrate to drupal 11, Here's where I am at present:

I downloaded all the files from the existing site and created a ddev copy of the site with the same php version etc, the site renders and i can view all the nodes and such

I created a new ddev project running Drupal 11.4.4 and add a secondary db to that via ddev import-db --file=/home//Documents/Sites/sitename/databasename_2013.sql I also created .ddev/docker-compose.volumes.yaml so can mount the files etc from the drupal 7 site for the migration module as well as added the required modules that I used on the drupal 7 site if they existed

After running the migrate step via the extension Migrate Drupal UI I see that the images & users are imported in the new ddev Drupal 11 site, the images are too, but none of the nodes are done, I'm stumped on how to proceed now, I suspect the issue is related to multi languages as that site initially was drupal 6 and multi language enabled but not sure how to check now after all these years

Currently looking into ddev and composer to manage stuff, but i'm unsure about the following

I know I can use eg composer to install modules eg: composer require 'drupal/ctools:^4.1'

this will grab ctools but I still need to use the gui/site in drupal 11 to enable that, can't i activate it in the cli? Google is failing me atm

I'm facing a weird permission issue with an old backup, not sure what the issue is or how to debug this kind of issue with ddev

The site was built with drupal 7 and ran with php 7.2 back in the day,

Warning: mkdir(): Permission denied in DrupalFileCache->check_filecache_directory() (line 128 of /var/www/html/melodicpixels.eu/sites/default/modules/filecache/filecache.inc). 

Selinux is set in permissive mode and i'm the owner of that path. The site does load but that warning is puzzling me

I've managed to get a backup of the site working with ddev, imported the database etc and that's working well, but i can't figure out to give another ddev setup access to said database, surely this can be done?

As the subject says, I'd love to edit some theming colors to recreate an old site stuck at Drupal 7, the theme itself is Bootstrap Business and while this was part of the theme back in the day those options no longer exist in the current version for D11

What is the best/recommended way in 2026?