Particles in general just don't work

I’m trying to do an explosion render in Blender 2.9 Eevee but despite looking at a million different videos it just doesn’t render no matter what I do. When I do it in Mantaflow it just straight up doesn’t render in either Replay or Modular modes. If I do Quick Effects > Quick Smoke it actually renders but it doesn’t animate. I have no idea what is going on. I’m trying to render it as halos yet every single tutorial online is frustratingly unclear as to exactly HOW they work. So my question is, how the hell do particles in Blender even work? How are you supposed to render them? How are they supposed to display? And more importantly, why are people unable to properly explain why they don’t work?

http://blender-3d.338.s1.nabble.com/Explosion-Sparkles-and-smoke-Streaks-and-smoke-tp1618p1619.html

http://blender-3d.338.s1.nabble.com/Particle-System-tp1614.html

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Sadly halos don’t work anymore (? or i’m wrong) and this isn’t documented. Anyway: If in doubt: BlenderGuru just did his famous donut tut anew for 3.0 and of course he uses particles… (or any other tutor publishing in the last year…)

You can easily reproduce hallow particle effect by creating a plane and assigning a material like this:

and using a track to constraint as assigned in the example picture also.

Then in your particle setup. change hallow to geometry and point to the textured plane, in the object parameters. and also enable " object Rotation " That means particle will also use the source object constraint.

enable rotation in rotation parameters / “orientation axis object X”

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