Laser treatments for concerns such as this “can” offer improvement depending on a variety of factors. If your skin has a good tone overall with no other issues outside the crepey skin, it’s possible laser treatment can provide at least some benefit.
If there are other underlying issues then it’s possible you’ll need to consider a surgical treatment option such as a neck lift or lower face lift potentially in conjunction with a laser treatment by an experience surgeon.
The best action for you to take now is to consult with a Board Certified specialist who deals with similar cases and offers a variety of treatment options. You can then decide which direction will yield the most optimal results for your situation.