What can I do to correct asymmetry, shadowing and a slight bump on my nose? 2 previous revisions done (photos)

Based on your photos, there does not appear to be a significant asymmetry in your nasal tip appearance. And you also have a pleasing profile without stigmata of several nasal surgeries. Please consider reasking your question with better photos or consult with your surgeon. Hope this helps! Dr. Joseph.

Hello. No worries. This time you should be more careful when choosing a surgeon for your revision rhinoplasty. An experienced and specialised surgeon can easily solve your problem. Please check our Instagram account and RealSelf photos. You can get more detailed information about me, ask all questions about your case and sending your photos to my assistants at the number on my profile. You can also book an online consultation and discuss your problems with me. Best regards.

From the photographs presented, your best off leaving well enough alone. There is no perfect nose, so it's important to have realistic expectations. You would only consider performing a fourth rhinoplasty if there were very significant issues going on, which there is not. It would be too risky to perform a fourth rhinoplasty.