It seems like you haven't quite got the concept of open source.
Making something open source is about granting freedoms for users of that thing. One of those freedoms is usually "you owe nothing and can do with it what you wish: sell it, fork it, modify it" in exchange for "the author provides no guarantees and is not liable for this software".
Open source authors that expect some benefactor to appear and sprinkle money so that they can quit their day job and work on their hobby full time are, for lack of a better term, delusional.
The default is that no one will use your thing, no one will contribute, no one will fund you, etc.
Making something open source is about granting freedoms for users of that thing. One of those freedoms is usually "you owe nothing and can do with it what you wish: sell it, fork it, modify it" in exchange for "the author provides no guarantees and is not liable for this software".
Open source authors that expect some benefactor to appear and sprinkle money so that they can quit their day job and work on their hobby full time are, for lack of a better term, delusional.
The default is that no one will use your thing, no one will contribute, no one will fund you, etc.
Anything beyond that is a fluke.