Can I convert any of these models to DXF format?

[Zeebles]

Wanting to 3D print some of these 3D models, but I'm unsure how to convert them to a DXF files, would anyone know if that's possible and doable?  Thanks.

https://www.models-resource.com/psp/mega...odel/5501/
 
or

Any of these:
https://storage.googleapis.com/utunnels1.../list.html