Inkscape. It’s what I need for 2D and it’s free. I use Onshape for 3D design and it really does a great job slicing models I make for 3D work using Kiri:Moto extension for making SVGs.
I have observed that folks who want to dip into vector design for the first time find that Affinity is a bit easier to manage for starters on the wallet. But then there is also that program that someone on the forum came up with but I can’t thing of the name right now. I’ll search, but someone with more wits about them at this time might come up with it.
Ok. The penny dropped: Cuttle: