Like I stated earlier......gurgling noises means a blockage
Turning it upside down, rolling it around in the front yard, flipping it etc.
are nothing but bandaid fixes that will NOT solve your blockage problem
The sodium chromate (anti-rust inhibitor) has crystallized from overheating probably due to numerous off level operations in past) and has plated out on inside of tubes...........like a plaque.
It is rock hard, permanent and will not go back into solution
The turning upside down, flipping etc. may break some of the plaque loose and allow a bit of flow but you still have a blockage that interrupts the proper flow of coolant which just causes more overheating due to inadequate flow which just causes more blockage.
Your cooling unit is DEAD.
Replace the cooling unit, replace the complete fridge (another absorption type or a compressor type) or remove it/use space as storage and get a yeti cooler.
If you decide to flip it/turn it upside down..hopefully that is just part of the process on its way to the trash