Did your jaw just recently seem crooked? Or was your jaw always crooked? There are many possibilities of treatment, but without in-person evaluation and more pictures of your bite, it is very challenging to say what is the correct recommended treatment for you. Solely based on your pictures, your jaw deviation looks to be hard tissue related issue, meaning it's either your teeth/bite or your actual jaw anatomy or both. Botox can only work on muscle fibers, unless your crook jaw is caused by jaw muscles on one side is pulling harder than the other side, Botox will not fix your crooked jaw appearance. See a local dentist first to rule out bad bite issue (cross bite), if you do have a cross bite, then your dentist will refer to you an Oral Surgeon and an Orthodontist to correct your bad bite and deviated jaw. Jaw surgery may be needed and the underlying condition will need to be diagnosed to see why your jaw is uneven.