Most people care most about the wars they (1) here about all the time, or (2) affect them personally. But (1) is most important.

Iran and Ukraine are both of those. Israel kind of too but not to the same degree nowadays. I guess if it started today, people would care less, but there's already plenty of attention built up that doesn't simply dissipate.

But the ones you mentioned, I have heard of the Myanmar one I think either here or on Reddit, but never heard about the other two, and neither have I seen any news on the topic anywhere. Nor does this stuff particularly affect anyone in rich countries afaik.
I assume the reason why no one is talking about them is because of exactly that. Most people probably just aren't aware of them, or how they are going. Their attention is being hogged by other conflicts, and in general people don't feel like going out of their way to inform themselves about negative news. If it doesn't come their way on its own, that's it.