Etiquette of Publishing a Paper
You need more than an idea to get published in a journal.
A research journal contains articles written about research which has produced new knowledge. If you haven’t done the research yet, you probably shouldn’t try writing a research paper.
Instead, you’d be looking at writing a research proposal, detailing the research problem and the gap in existing knowledge and why it’s important, the specific research question you’re intending to research and how it will help address the research problem by filling in a part of the gap in existing knowledge, and the specific methodology you’re planning to use for your research, along with the resources you expect you’ll need.
At this stage of your career, you would then likely send this proposal to various faculties at universities that have academics working on related fields as a part of applying for a PhD program.