First, diagnosis based off of a single photo is insufficient and inaccurate compared to an in-person physician consultation including review of past medical history and examination of your facial bone structure with dynamic facial movements.
Second, your question is a very frequent concern among patients from every background and location in the world regarding paired body parts. Doctor, "Why is my left part X bigger than my right part X?," or visa versa. In the vast majority of cases, the answer is that this is normal asymmetry. In terms of facial structure, most every individual on the planet, including models, actors/actresses, and others considered "very attractive," have some degree of facial asymmetry.
Third, based on your photo alone, your left eyebrow peak is the most pronounced asymmetry (>4mm higher peak than right) followed by the amount of upper eyelid skin showing on your left versus right (several mm more show on left versus right with a higher lid fold placement). A physical exam would be prudent to evaluate for left upper lid ptosis (lid elevator muscle weakness). There are several conservative approaches to attain the illusion of symmetry before considering surgery, however, including simply shaping the left eyebrow more similar to the right. If you don't like it, the hair will grow back!
The next steps to consider before surgery, after determining you have no left upper lid ptosis, would be a trial of neuromodulator therapy (botox, dysport, etc) in an asymmetric fashion to lower the left and raise the right brow.
If non-surgical intervention proves insufficient, there are many surgical approaches to attain the desired result as mentioned by several other colleagues on this post.
Thank you for your question.