Improving ecommerce UX starts with understanding the complete customer journey rather than focusing only on how the website looks.
Start by reviewing these stages:
Product discovery → Product page → Add to cart → Cart review → Checkout → Payment → Confirmation
At the discovery stage, make navigation, categories, search, filters, and sorting easy to use.
On product pages, provide clear images, useful descriptions, specifications, availability, delivery information, and an obvious call to action.
The checkout process should be equally straightforward. Avoid unnecessary complexity, provide clear order information, make forms easy to complete, and ensure the experience works properly on mobile devices.
Website performance also matters. Large images, unnecessary page elements, and inefficient functionality can make an online store harder to use.
Finally, review the experience across different devices and test important interactions regularly.
Good Ecommerce UX is ultimately about reducing confusion and helping customers move naturally from discovering a product to completing their purchase.