You’re not though, the laborer is contracted to produce a desired end, and they employ their labor as a means to produce it.
This is blatantly misinterpreting the relationship between the capitalist and the worker.
The capitalist is the one who has acquired the capital through their labor and therefore owns the good. The worker is simply acting upon the capitalists property to produce a final good (desired by the capitalist) while the capitalist retains full ownership of the good through the entire process.
If someone has a maid clean their house, the house doesn’t become the maids all of a sudden, the maid has simply altered it in some way, but the appropriaton of the house was still made by the homeowner.