Installation problem

[georgetze]

I am trying to install for the first time elasticsuite on Magento 2.3.4

I run the command
composer require smile/elasticsuite ~2.8.0
and i am getting the following message:

./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1

• smile/elasticsuite 2.8.5 requires magento/framework >=102.0.0 -> no matching package found.
• smile/elasticsuite 2.8.4 requires magento/framework >=102.0.0 -> no matching package found.
• smile/elasticsuite 2.8.3 requires magento/framework >=102.0.0 -> no matching package found.
• smile/elasticsuite 2.8.2 requires magento/framework >=102.0.0 -> no matching package found.
• smile/elasticsuite 2.8.1 requires magento/framework >=102.0.0 -> no matching package found.
• smile/elasticsuite 2.8.0 requires magento/framework >=102.0.0 -> no matching package found.
• Installation request for smile/elasticsuite ~2.8.0 -> satisfiable by smile/elasticsuite[2.8.0, 2.8.1, 2.8.2, 2.8.3, 2.8.4, 2.8.5].

Potential causes:

A typo in the package name
The package is not available in a stable-enough version according to your minimum-stability setting
see https://getcomposer.org/doc/04-schema.md#minimum-stability for more details.
It's a private package and you forgot to add a custom repository to find it
Read https://getcomposer.org/doc/articles/troubleshooting.md for further common problems.

Installation failed, reverting ./composer.json to its original content.

Do you have any idea why is happening that?

Is it possible to install elasticsuite without using composer ?