Sure, Bitbucket is awesome.

But have you considered these open source alternatives?

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

Check by yourself: Gitea , GitLab , Forgejo .

So is Gitea

All-in-one software development service with git hosting
★ 57.5K Git Software development License: MIT
The goal of this project is to make the easiest, fastest, and most painless way of setting up a self-hosted Git service.

Read more about Gitea
So is GitLab

All-in-one software development service with git hosting
★ 24.5K Git Software development License: MIT
GitLab is an open source end-to-end software development platform with built-in version control, issue tracking, code review, CI/CD, and more. Self-host GitLab on your own servers, in a container, or on a cloud provider.

Read more about GitLab
So is Forgejo

Software forge
★ 5.4K Git License: GPL-3.0
Forgejo is a self-hosted lightweight software forge. Easy to install and low maintenance, it just does the job.

Read more about Forgejo