First advice, is to consider hiring a Social Media Manager, especially if you have no prior skills in digital marketing or managing professional social media accounts.

I'm not a SMM, but tips I can share on managing and growing an account;
• Have a worthy product; work majorly on building your project, website, art, etc. It's easier to market a product when it actually exists.
• Grow your knowledge of the industry your product is related to; with this you can share useful content and make your page relevant to visitors,
• Be consistent; being active gets attention to your project as it would keep popping up,
• Engage with profiles related to your niche, this can be through comments, joining spaces or sending a dm. Avoid spamming however,
• Repeat.