My current toolkit (as a 3D printing hobbyist) on Linux currently includes:

• FreeCAD: Takes some getting used to, is a lot stricter, but that might even improve your CAD skills in the long term, as it forces you to think more about what you’re actually doing. The closest thing to Fusion360.
• OpenSCAD: You’re basically programming your models. Very powerful if you need parts with repeating sections and/or want something with easily adjustable parameters.
• Blender: Useful when I have to do some quick&dirty modifications to a model I’ve downloaded from somewhere.