Discourse Forum with my Wix website

I’ve explored & considering Discourse as a forum for my Wix site, but don’t quite understand some key things


Q1 How exactly is Discourse free? They say its 100% free if self hosting.
1.1 Does this only mean custom building this using your own infrastructure?
1.2 Does this also mean it can be free for those who already have hosting with a provider like Wix?
1.3 Does it not allow connecting to my own domain with Wix without paying Discourse?

Q2 This is just a feature of my Wix site. How can Discourse be set up/connected to/integrated with Wix?
2.1 Does Wix have some native integration for this?
2.2 Subdomains..?
2.3 Zapier?

I’m quite clueless about this setup, if people can explain an overview clarifying these that’d be great. Also, people who’ve explored & tried building forums for their websites, I’d appreciate related experiences, advice & tips.

It is free when you self host (here is a guide), but the screenshots you have are from our free hosting, which is not the same as self hosting.

When you self-host, you can have any domain you want, when you are using our hosting, you can’t without upgrading.