With Volumetric Light Mesh you will be able to generate a cone mesh you can use as pleased. The mesh has a quality slider and is optimized for mobile devices. The mesh can be exported to be used without the mesh generation script.
The asset includes a volumetric lighting shader for the mesh.
Features:
If you experience any bugs (there aren't any in Bugge's assets of course) but if you do reach out to me on Discord so I can have it fixed asap.