Well, normal miners have nearly no chance of breaking even, not to speak making a profit. Only some can do it, maybe because they have free power or a good place to host for cheap. But even then it is risky and most see it as a hobby. Or some deceive themself with calculation tricks. Like calculating a rising bitcoin price into. They would have come better buying bitcoins from the start then. And so on.

And no, difficulty can only be lowered when less miners mine. If you would lower them artificially then simply more miners would be profitable and more miners would start their miners. This can't solve this.

There is simply no right to mine profitable. And we have way way too many miners anyway. One transaction on the bitcoin network eats a huge amount of electricity. Not healthy for the fame of bitcoin.