well my current Honor View 20 is fine (and no no Trump'etisme mumbo jumbo albeit being Huawei off brand, well neither has my Huawei Mediapad M5 any issue with that on the matter ... but i reside in Switzerland ... i wonder for north america ... ) and a flagship design and build at 449chf is what i call cheap phone (well just as performant as a Pixel last gen or a crapsung sXX or a iForgot "theydidexist"), as for the reliable part: regular update, more than 2 days battery (shut down at 0% tho ... )
non expandable storage is my only grief but at the price given the specs ... can't complain Kirin 980, 6gb/128gb (they have a 8gb/256gb model, although i would gladly take a 6gb/256gb ... 8gb is useless) overly excellent camera with 48mp (single objectif but no gimmick and good, although there is a TOF camera aside ) gorgeous IPS screen with a minimalist punch hole selfie cam (well i don;t verse in the idiotic trend of the selfie ... but it's still useful for video call ... ) quite fast fingerprint scanner (rightfully placed on the back where it belong, not that inscreen or bottom front scanner are bad ... but the placement make them a little impractical when used to unlock with the index and even switching to thumbprint the grip is less secure ... )
i got a UMI phone (which is UMIDIGI) hum ... their recent lineup are not bad at all but i would rather go with a known brand like Xiaomi/Redmi or Huawei/Honor
I'll be frank, you're wasting your time looking for a phone with good reliability. It's just not something that you'll find, they are all built in the same way with most of the same components and likely in the same factories too.
Realistically, if you're concerned with reliability the only thing to do is buy a cheaper phone which will be cheaper to repair/replace. That's about it.
naaaaaaaaahhhhh some brands have better reliability and also cost quite less than other while still retaining good specs (proving some other brands are just taking their faithful customer for some milk cows )
i.e.: i see more people with fractured Samsung Apple phones than the 2 recent brands i got thru (and which cost way cheaper but offer the same performances ) or i see more "warranty return" from OnePlus or Googles phones.
although OnePlus and Google are slightly above Samsung and Apple (tho google is starting to think they are "a la" Apple and their pricing is becoming too cheeky for what they offer )