 So you just want trails, not a problem. If you start with a basic empty particle, just so we can see things, give it a velocity and increase the Z, then replace the sprite renderer with a ribbon renderer, then add a spawn rate, set it to something like 50, and under initialized particle, set lifetime to something like one. And under the ribbon attributes, set the width to whatever you want. You're done. If you drag the ribbon to your scene now, you will see it creates trails. From here, you can add things like jitters, or even different materials to get the effects that you want. All that helps in as always, hope you have a fantastic day and I'll see you around.