Glad you enjoy :) Glowy platform are really easy to make. You need to open Unity with Lightweight render pipeline, there you will have something called postprocessing volume and there you can set bloom (its the intensity of this effect). Then you create an object with spriterenderer and add your texture (in platform case it was rectangle). Then you need to create a material and set it to LWRP/lit. And you should be able to set something like emission map. When you click it you can set intensity and change it to 2. After you add material to your spriterender it will glow :) good luck!
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Also here is a tutorial I made on my particles, it might be useful: https://manus.itch.io/beyondtruth/devlog/97942/beyond-truth-particle-tutorial-1