On the Personal return, a 1099-B does not file on Schedule C but rather Form 8949 and Schedule D. Even if the 1099-B is associated with the LLC, it is still reported on these forms (unless you need to be filing a Partnership or an S-Corp return. Those returns are handled differently).
To guide you to enter your 1099-B correctly, please see this FAQ: https://ttlc.intuit.com/replies/4789365
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