I have an online store. I created it in a few days because I used Shopify designer with ready-made templates for e-commerce. I invested my money in advertising and business software, like this
https://apps.shopify.com/upsell-cross-sell-products , which gave me more options in managing an online store and as a result, I spent less time managing my online store and could quickly set up my online store to use my marketing strategy to increase sales. This didn't start to bring me profit right away, but now I have a stable income from my online store and continue to increase my sales.