Problems uploading a lot of files and large files to git

We are working on a large project.

The size of this project over 30GB.

So we are going to share the source code using git for ssh.

However, it does not upload to git because a lot of files are uploaded.

We have tried many challenges such as lfs to solve this problem.

But we are still suffering.

We don’t even have server developers.

I need a lot of help.

Help me.