I will fix your unity errors

Many types including syntax errors, compiler exceptions, crashes, freezes, build errors, unintended behavior, errors from ChatGPT, and more

Oftentimes, bigger files contain long functions, lots of variables, or "spaghetti" code which makes it more challenging to investigate the issue. That's why it could take longer (and cost more) to fix. If you have a long script, message me first with the issue and I'll give you a cost estimate.

Right click the scene file in your project window, then click Export package and save it with a name. You can also export your whole project from the menu bar by clicking Assets -> Export package. More info here: https://docs.unity3d.com/Manual/AssetPackagesCreate.html

Try zipping the package. If it's still too large, import the scene into a new project and delete any unnecessary assets, then repackage it. Message me if you're still having issues.

An explanation of the error (what went wrong and how I fixed it), plus comments on any code additions or changes

Yes