Before actual circulatory systems you'd have to, like, diffuse chemicals around a single celled body of weird slime with water around or else you explode or shrivel up or something less comprehensible. I mean.
Ferment in the primordial soup, inhale nutrients from the water. Life good. No awareness.
It was also really, really boring. But it’s nothing because you didn’t have the ammo to process how boring it was yet.