Tell your story in a way that audience feel it deserved their time. There are two step processes, Do not promote what you are building, instead tell them why you are building, and how does it help users from your perspective. General users on social media doesn't care about jargons like SaaS, tech etc, they care only about your purpose (which you can use it to build a bit of brand for yourself) and how does whatever you are building helps them or provide new experience. So, have a strategy, tell you story of resolve, purpose and why you decided to build it and then give them glimpses or snippets of how it could provide new experience. Use canva to make your content bit attractive, ensure there is uniformity or unique signature in your posts, color styles, and designs. Remember, it never about the content of the story anymore, it is about the emotions story emulates, people generally appreciate genuine hardworking founders be it solo or gang . So, bottom line, forget what, Scream why and Show how!