As mentioned above this is a difficult question. It all realy depends on your niche and the type of products you have.
You need to ask yourself a few questions when trying to drive traffic to your site besides the usual SEO stuff;
1) What is your target demographics?
2) What platforms does your target engage on; tik tok, facebook, twitter, insta etc etc - Social platforms are a great source of early traffic, but it requires engagement!
3) Sales Funnels - Start thinking about what your target audience problems are and what they are typing into the search engines to find the solution, create landing pages and blog articles that answers those questions and presents your product as the solution.
Now you have your store and products, you have to now market your store, you have to take your products to your target audience and convince them to part ways with their hard earned cash to buy your product. Create some marketing material, sales funnels and engage on social. Thats a good way of growing organically, profitably and for the long term.