well my advice as a marketing expert you need:
improve the design of your website.
Ask for more reviews on Google.
you need social networks, you can show the before and after of your projects, do it as a reality for Instagram and Tikto, including a challenge of arriving at a destroyed kitchen and leaving it luxurious.
Have you done ads on Google?
Improve kitchen photos.
do promotions on Facebook.
If you need some help I can help you
I think your idea is for a very small niche market.
I think you could improve your website, I would add images, social media information in exchange for registration, if you need I can review your design
If your community is good you can grow, well I have never sold a virtual store but it can be a business or very profitable or a landfill depends on the community, in my opinion the bigger it is you can sell whatever
If you don’t want to program, you can use WordPress, it could help you with the topic.
for b2b, I would try linkedin, or google ads and other strategies, facebook is not so good for this