The game only starts with published website. Now, your goal is to bring visitors. You can do it quickly by running a Google Ads. Or do it longterm and step by step by improving your rankings with SEO. Best way? Combine both together.
You will learn the basics, on the fly. There and many videos and how-tos in your language.
Just start and see how it works. You don’t need to hire expensive pro to see the first results.
Sometimes you need to do it BIG, sometimes on budget. You can always adjust your daily spending or pace you complete SEO tasks.