Searching Meta for "meta meta" gives me the impression I am supposed to discuss Meta on Meta.
That is correct.
I'm having difficulties starting meta discussions on Meta.
They have a high tendency of being:
That's because people disagree with your suggestions and/or think they're unconstructive. In other words, your attempt(s) to initiate discussion are working exactly as intended. The proposals are being discussed and subsequently rejected by members of the community.
Just because you disagree with community opinion does not mean that you've chosen the wrong forum in which to initiate the discussion. I don't think any of your questions have been closed as off-topic. That would be the indication that you've chosen the incorrect site on which to post your question(s).
Perhaps the real problem is that so far, you've been trying to tell the Meta community that the established system simply doesn't work and needs to be radically reformed. Paradoxically, you're trying to do that within the very system that you claim is broken. Logically, both cannot be true simultaneously. If the system really is broken, you're not going to be able to use it to successfully effect change. If you can successfully effect change, then the system is not broken and does not need to be radically reinvented as you suggest.
Beyond that pesky little logical paradox, it is probably true that questions critical of the entire system are not likely to be well received. But that's not something limited to a Q&A site on the Internet. Attempting to resist the system from within the system is an admirable strategy, but it rarely goes over very well. You might be interested in the advice contained in the answers to this question: How do I participate in Meta and not die trying?