How to convert .anim to .fbx?

Is there any possible way? FBX Exporter doesn’t work and I’ve been trying everything for 5-6 hours straight.
I only need to convert the animation clip to fbx file to import it in blender.

Thanks.

What does it mean that FBX Exporter doesn’t work? It does support exporting animations to fbx. If you can describe the steps you have tried might be helpful.