I got a Brother embroidery machine only to find that making anything other than the most basic patterns required a very pricey proprietary program. Thankfully I found Ink/Stitch, an open source plug-in for InkScape. It’s still a little rough around the edges, but after getting used to its foibles, it’s very capable with the right amount of elbow grease. The main dev is active and very helpful in their issues.