Comment by heyalexej

If you're comfortable with PHP, Shopware & Sylius (both built on Symfony). For Python, look at Saleor. If you don't want to live in a world of pain ( see looping__lui), use a SaaS solution like Snipcart or BigCommerce (which has very competitive rates vs. Shopify). Use the time to learn how to market your product, run ads, create content and grow your business.