If you have a concept you want to sell, the industry standard involves these steps:
There are platforms and major corporations that actively seek outside submissions: we buy ideas
Create a "proof of concept." It doesn't have to be perfect, but it must prove the idea is practical. If you have a concept you want to
Companies want to see that an idea works. Inventors often create prototypes from simple materials like wood or use 3D printing to demonstrate feasibility. we buy ideas