ResearchGate is a platform primarily designed for us to share and collaborate on academic work, including published articles, preprints, conference papers, and other types of research outputs. It doesn't have the same rigorous editorial process as academic journals. Therefore, I believe that you can upload unedited and unpublished articles to ResearchGate. However, kindly ensure that you have the necessary rights to share the work and that it complies with ethical guidelines, such as not containing any plagiarized content.
I agree with both comments so far that RG can definitely accommodate your work, especially Jyro Triviño that it is an excellent opportunity to demonstrate your work without the same editorial constraints. I would highly encourage you in this regard.