All I can figure is a couple of air locks are happening since the middle flows but two ends in different directions don’t.
Not even possible.
Suspect list includes a failed faucet and a pinched water line. That's about all. Inspect every inch of the lines to the slow faucet.
Then with water off disconnect line from faucet and using any device that can do the job extend to a bucket and turn on water pump.. (The old convert your tub to a shower device works well for this)
IF good flow. the faucet is the culprit
IT May just be something clogging the valve.. rare but can happen.
(EDIT: Fixed your malformed "quote" so it wouldn't wreck the rest of your post.)