How to improve my deep glabella? (Photo)

Thank you for your question. I suggest that you move forward and consult with a board certified facial plastic surgeon. A combination of surgical and non-surgical procedures has the potential to achieve your desired outcome.
Best wishes,

Thanks for your questions and your photograph.  You may be a candidate for a non surgical rhinoplasty using filler to improve the transition from your brow to your nose.  The nasal bridge could also be augmented.  Additional photo images demonstrating different views may be helpful, but ultimately, I would advise you to consider a formal consultation to discuss your options.  

Hello and thank you for your question. Based on your
photograph, you  have a deep set readix and you may benefit from radix augmentation using diced cartilage wrapped in fascia.  Make sure you specifically look at before and after
pictures of real patients who have had this surgery performed by your surgeon
and not just a computer animation system. The most important
aspect is to find a surgeon you are comfortable with. I recommend that you seek
consultation with a qualified board-certified plastic surgeon who can evaluate
you in person.
Best wishes and good luck.
Richard G. Reish, M.D.
Harvard-trained plastic surgeon

Although it is not clear with this one picture I assume you do not have fullness of the bone under your eyebrows that could be reduced with a procedure called orbital bony contouring. Augmenting your radix (the top of your bridge) with fascia, cartilage, fillers, or fat would be beneficial. Consult with a surgeon experienced with all these techniques.