I did something similar to that video How To Make Fire Particles System in Unity and use similar settings and darker color to make the smoke on the back. You can also try this one Unity VFX Tutorials - 08 - Basics (Fire) (youtube.com)
I did something similar to that video How To Make Fire Particles System in Unity and use similar settings and darker color to make the smoke on the back. You can also try this one Unity VFX Tutorials - 08 - Basics (Fire) (youtube.com)