Actually one minor correction. The 3 way jandy valve is currently feeding the pipes on the left.
It just seems odd that you have a return (the bubbler) that you can't get water to, and you have a return line that goes nowhere. Interesting coincidence.
Maybe that pipe to the right goes to your neighbors to fill their pool.That is very odd. You'd think they (2 pipes on the right) would both be headed in the same direction (sewer/street). Inquiring minds want to know.