What would be the best filler to fix my smokers lines? (Photo)

Hi
There are several options. Non surgically options include dermal fillers,  toxin, prp chemical peels and lasers. I would suggest you start with dermal fillers and see if you are sufficiently happy with the reduction in lines.  The smokers lines need to be taken into context with other areas of the face and this approach is neeeded to ensure you get the best results.
Best wishes

I personally like Restylane fine lines and Teosyal Redensity II for this, although Juvederm Ultra or Volbella are alright too. Deeper chemical peels or laser resurfacing are adjunctive therapies to consider. Best to speak with a highly trained cosmetic expert such as a dermatologist to ensure optimal results & safety.