Will another BBL fix this ? Is another BBL the answer?

Dear weightloss11111,
it is hard to tell for sure without an examination. If you are considering surgery, I would suggest you consult a board-certified plastic surgeon. Only after a thorough examination, you will get more information and recommendations.
Daniel Barrett, MD
Certified, American Board of Plastic Surgery
Member, American Society of Plastic Surgery
Member, American Society of Aesthetic Plastic Surgery

Without any photos, it is not possible to appreciate what your current appearance or concern is. Please also include several photo angles of yourself.

That being said, you are in good company with many others who had high hopes for BBL but instead received disappointing results (lumpiness, unevenness, lack of projection in the central and/or lower buttock, post-deflation sagging, etc.) as most of the fat melts away. It is not quite as much the quality of the doctor nor the liposuction technique used but rather the quality of the procedure that is a large part of the problem. Thus, going back for round 2 (3,4,5 etc) BBL most often produces the same disappointing results but at another financial loss. Typically also, each successive round of BBL leaves behind more scar tissue with lower quality fat to harvest and a lower quality recipient bed of tissue where it is being transferred. Buttock implants indeed provide a more reliable, predictable, relatively safe, and permanent result, especially for adding projection to the buttock and often smoothing out lumpiness. Occasionally a lower buttock tuck may be advantageous for lower buttock fold asymmetries and/or sagging. Please keep in mind that an extremely few number of board-certified plastic surgeons specialize in buttock implants so be sure to consult with one that is reputable and experienced. Unfortunately you may have to travel long and far away from home to find this particular surgeon. Glad to help.

Without posting any photos there is NO way to offer any advise. Best to connect to a revision BBL expert boarded PS. Expect fees in the $6,000-$20,000 ranges.