Hi as you can see in the video, the shooting particle system are only visible when you are close to them.
This project is from this Repo and it was built in Unity Editor 2020. Now I converted it to 2022 and the particle system are buggy.
I had a similar problem using a particle effect with Billboards. What helped was to increase the “Sorting Priority” to a value > 0. This setting can be found in the material’s shader (URP/Particles/Lit shader) under Advanced Options.