How do I migrate a big TFVC repo to git ?

See more:

Azure

Git

TFS

DevOps

I have a big TFVC repository on an on-prem TFS 2017 server. In that repo, I have a lot of different projects (SSIS, Redgate databases, Powershell scripts...). Some of these projects are using branches, some not.
They are all well stored in a folder tree structure. This model permits me to have multiple CI/CD pipelines to Build and release my stuff.

My question is, what will be the result if I'd like to migrate to Azure DevOps using Git?

Will I end-up with a single big branch where a build will include all of my projects? In that case, I won't be able to separate my applications based on the original folder (I guess...).

Will I need to create a Git repository for each of my projects?

Thanks for your advice!

What I have tried:

Nothing tried so far... Looking for advice!