“What exercises can I do to improve myopia?”

Try glasses, contact lenses or refractive surgery.

There is no scientific evidence supporting the fact that eye exercises can improve myopia. Myopia is a refractive condition based on the anatomy and the "size/length" of your eye where what you look at focuses in front of the retina instead of on the retina. It is similar to taking a blurry picture until the camera is re-focused. Depending upon the amount of your myopia, distance objects will be blurry, and closer objects should be clearer. How well you may see may depend upon the fact if you have any associated astigmatism.

I will mention that there are eye exercises that can help eye muscle problems or accommodation problems, but this is not the case here.

There are ways to correct myopia including wearing glasses or contact lenses or getting refractive surgery. But these options do not "cure" myopia which will change with time and with the aging process. Refractive surgery will correct the myopia for a period of time until your eyes possibly change some more, a normal aging process.

Here is 1 of many websites for you to refer to.
https://www.umassmed.edu/news/news-archives/2024/06/eye-exercises-to-improve-sightis-there-any-science-behind-them/
Good luck and best wishes.

Exercises arent effective in alleviating myopia.

There are Vision Therapy exercises that may improve your myopia, however they are limited in the amount of improvement you may achieve. Your best bet is to find a Behavorial or Developmental Optometrist to guide you through a program. There are other methods to improve Myopia, like Ortho-K or of Course LASIK, if you are a candidate.

None scientifically proven to decrease the progression of myopia .