I meant my personal learning about Xiaomi install methods. These are quite different from my earlier Samsung experience. But you already have Xiaomi experience.
My /e/ experience is once a device goes “Legacy” you have the option to go Unofficial like [UNOFFICIAL BUILD] Xiaomi Mi 9T (davinci) for /e/OS-T or I mentioned LineageOS above (see https://download.lineage.microg.org/davinci/).