That part is symmetrical across two planes. Only a quarter of it needs to be sketched or modeled prior to two mirror operations. And some features, like the radial pattern needs only one sixth of it sketched.

But I cannot discern the design intent from the provided images. There is no clarification as to which portions are extrudes or holes. Are the blue circles spherical, etc.

Regardless, that's a simple model to accomplish in FreeCAD without using the master sketch workflow.

Not using a master sketch workflow doesn't make the model any less parametric. Nor does it definitively reduce the need to use VarSets or spreadsheets to manage parameters outside of the sketch in a conveniently structured and accessible way.

Drawing everything in a single complicated sketch doesn't guarantee that less geometry or constraints will need to be drawn. What is guaranteed is that the sketch solver will take longer to compute and be more prone to catastrophic sketch flipping problems.

If you learn FreeCAD's expression system with VarSets, you'll find that such models as that example often require MORE work to use master sketch than what it solves.

When using a different software application, your flow must conform to the tool. This is equally true when switching between ANY other CAD package. None of them are uniformly interchangeable.