Replicate Background Animation Loop

I need the fluid, abstract background animation you see in the reference clip rebuilt from scratch—same colours, same motion style—while stripping away every extra layer (text, logos, footage). Start with... (Budget: £10 - £20 GBP, Jobs: 3D Animation, 3D Design, 3D Graphic Design, 3D Modelling, After Effects, Animation, Blender, Video Editing)