If you are like me and are not good at editing or creating 3D content, there is a tool for those like us. The tool is free to use: Vectary. It is, in fact, a platform that allows you to create and export 3D content and is very easy to use. For the 3D posting, I simply wrote the text, then exported it.
A background comes directly from Facebook, which lets you select what kind of background you want when you upload your 3D content there.
In addition to the ability to make text content, Vectary allows you to upload logos or use predefined objects in their platform. This means that it would be easy for people who manage Facebook pages to start taking advantage of this type of content. And if you need more 3D objects, you can also look at Poly, a Google-made platform where 3D content creators upload their renderings. You can download and use them easily.
If the 3D file has more than 3MB, you will not be able to upload it to the platform.