>>16830662 (OP)
Unironically, yes. Like you said, everything that makes you "you" will break down and decompose into other elements and become part of other structures.
But when most religions talk about reincarnation they mean it in a metaphysical way, like, they believe some spark or thread of your prior life remains, perhaps in the form of karma you have to pay off, or perhaps you can somehow remember your past lives or whatever. I don't believe in any of that. I think your body become a corpse and melts into various compounds that go back into the Earth, your mind and all it's memories are either stored in some kind of hypothetical holographic universe function or some shit, or they just get lost forever if they're only stored in the brain. Personally I dunno, I have no strong opinion on that, but I don't believe in supernatural forces, so I don't think your memories or self awareness from when you were alive will survive past the point of total death.