Yeah, like, even as fungi best case you connect a vast rainforest and provide communication and transportation services (also for sharing forest memes) ... only to be keenly aware at all moments of how pollution, deforestation, and climate change is damaging the forest in real time. Yeah, no.

Even if I were an undead virus (a virus that is dead-ish, not a virus causing undead humans to pollute the planet even after death) I wouldn't know how to (re)arrange my genome to target some apes.

Bacterium is peak lifeform, just settle into a literal rock, sleep a few billion years.