You’re permitted 10 files - total - that can be editable at any one time.

For simple things you can have all your components in a single file and make do but I rather dislike working this way for a ton of reasons.

I’m thinking about solid works when my fusion license expires. At least I’ll own my files and be able to manage them on my own ssd.

Solidworks for Makers is currently $25/yr I think (discount code).

I'm a pretty happy FreeCAD guy, actually -- my issues are not FreeCAD but learning design -- but I will be trying it too.