I’m not sure what you mean by “crackly bubbles”. Many plants (possibly most of them) use electrochemical signaling, which at the very least resembles the hormonal system in animals. The simplest animals are definitely less complex, neural processing wise, than the most complex plants – consider for example sponges (literally no nervous system of any kind) vs. the venus flytrap (capable of rudimentary counting; the trap only closes when the hairs are triggered a certain number of times within a certain timeframe).
There’s also tons of animals whose nervous systems aren’t at all similar to that of humans. Insects and arthropods for example don’t really have a brain, just lumps of ganglia that do some rudimentary processing, and unsurprisingly most people don’t really consider insects to be capable of having any kind of meaningful sentient internal experience.





https://www.smbc-comics.com/comic/anything-4