Hi @aglz 
Technically, there are no product limitations to building a 2-sided marketplace with WeWeb + Xano. You can do it for sure 
That said, as with other no-code tools or programming languages, there is a learning curve when first getting started in WeWeb (and Xano for that matter).
If you have no technical background, we’d recommend watching our first course of the WeWeb Academy and taking part in Xano’s Office Hours to help you get started.
Is this your first time building a website or web-app?