Unable to install

Before you install bat_api, you have to install the module services manually. This is because drupal services is on beta phase and it is not installed by default:
Firstly -> $ composer require 'drupal/services:^5.0@beta'
And then -> $ composer require 'drupal/bat_api:^3.1.0'

Unfortunately, the recommended approach doesn't work, as I'm using Drupal 11.1.1, and the Services module is for Drupal 10. When I run the command, I get a similar error. I checked the Services module, and there does not appear to be a module for Drupal 11.

I'll try to work around the problem using the BAT core in the interim, however if you can suggest an alternative approach, it would be helpful.

I´m at Drupal 11 too and installed (and activated) services manually (with this "patch": https://git.drupalcode.org/project/services/-/merge_requests/17/diffs)

But still I get the same error as #1.

BAT API is using now Drupal Core REST Api
Service module dependency removed