How to succeed in marketing?

I already done everything that's technical: website, backend, seo. It's a B2C (with B2B custom plans) ai image generator + editor platform where people can OCR documents generate images, and even images with transparent backgrounds so it's a plus for designers, for game developers they can generate 3d models and put them into their videogames, restore old photos, remove backgrounds and extract every frames by videos. When I started developing it I targeted non-tech savvy people who want to generate images easily (I created an easy modern UI - which was hard for me as a backend developer) but later I thought I could add more things to it and that's how it ended up a multi tool.