Don’t bother. DXF sucks. Do a File|Save As and then in the filetype box in the save window, select SVG (not Inkscape SVG which is a slight variant). This will bring up another box with SVG parameters. Check the box to save text as paths.
Then in Fusion you import the SVG - Fusion can support SVGs just like DXFs. But the curves in SVGs are true bezier curves and not a series of small segments connected to simulate the curve.
I use CorelDraw myself for most of my non-3D design work. I’ll use Inkscape for classes I teach since everyone can download it but I’ve used Corel since it first came out like 20 years ago 