unfortunately dwg files are a blind spot on linux. there are projects like qcad and librecad that have experimental dwg support (behind a paywall for qcad) but they require you to learn a whole new set of tools because workflow is entirely different for these. i don’t have experience with the web version, it might be enough for files with fewer elements but your best would be to use a vm for immediate future. alternatively, you can draft your work in 3d and export your drawings from these files. for architectural work there is a great addon for blender called bonsaibim, for mechanical work there is freecad (it also has a workbench called bim workbench for architecture) and for circuit design there is kicad.