By this logic single cell organisms are just lonely prisoners

No. Each of us represents ONE (potential) within ALL (potentiality). The segregation of ALL into individual ONEs within itself, is based on motion (the loss of potentiality) creating momentum (balance within motion) which then creates the need for self segregation to allow balance.

Only within the "bondage" of ALL can ONE have freedom, and loneliness represents the self inflicted trauma of choosing (free will of choice) to ignore adherence to self sustenance, which would establish unity with other ONEs based on necessity to sustain self.

"Single Cell Organism" is a rhetorical mockery of a) selfish ignorance (single cell aka self imprisonment) and b) a contradiction in terms, because organism means the structure (the foundation) of bodies. There's no single cell...each ONE is transmuted out of ALL.