I think people are getting bored of mock up photos. Print on demand has been rinsed that much that most know now that the products you’re selling you haven’t touched with your own hands or seen with your own eyes. That you haven’t took the photographs yourself. If you’re in a country with no right of return policies then its even riskier for people to buy your product from a mock up picture.
So many are preferring to shop on live streams now as they can see the product and ask questions in real time.
your website is great though so I’d say gaining trust is where you need to focus. Maybe order a few of the clothing items yourself and do some lives, just to gain that initial trust.
good luck!