Aah damn. the Mi11x has Palaych developing ArrowOS for it. Couldn't get any better. MIUI doesn't even matter one bit once the bootloader is unlocked. Maybe you could find a prospective buyer and sell it off and get the 11x. BUT, be forewarned, it too lacks a physical proximity sensor and relies on the gyro to guess when the screen needs to turn on and off, which is DAMN unreliable IMHO and a MAJOR PITA, not to mention the side fingerprint sensor, which has caused so many accidental unlocks while sliding it into the jeans/trousers/shorts and 'N' number of crazy gibberish SMS/whatsapp/calls being executed. Funny sh*t, if you ask me. LOLI was considering the Mi 11x ( Poco F3 same thing) but at that time it had some serious black crush and dimming issues and I've always hated MIUI. Tbh I'm not worried about the software currently coz oneplus has promised support for 3 years but I was hoping to switch to custom ROMs after the warranty period and continue using this phone for 4-5 years minimum. Bummer :/
Side note: These dimming/crush issues are 'REALLY" over-rated I feel and are just spread around to cut phone sales by competing brands. The only true place that it occurred was the OP 8Pro, but only in the initial batches, all later batches were devoid of this issue, as far as I'm aware.