Sure, GitLab is awesome.

But have you considered these open source alternatives?

They are free, self-hostable and community-driven.

Check by yourself: Gitea , Forgejo .

So is Gitea

Serviço completo de desenvolvimento de software com hospedagem git
★ 48.1K Git Software development License: MIT
O objetivo deste projeto é criar a forma mais fácil, rápida e indolor de configurar um serviço Git auto-hospedado.
So is Forgejo

Software forge
★ 2.2K Git License: GPL-3.0
Forgejo is a self-hosted lightweight software forge. Easy to install and low maintenance, it just does the job.