How to improve my eyes. Playing cricket.

I am having a few problems of eye and vision. And i am having few refractive errors and and huge eye strain My vision present Left eye   =  sph -3. 5 ,cyl 0.75 axis 170° V. A. 6/9 Right eye=   sph -3. 5 ,cyl 0.75 axis 10° V. A. 6/9 FROM 1 and half year I not visited eye doctor 3 months back my glasses was broken so I decided to buy new so I went to a eye doctor suddenly my eye power increased .Before 1 and half year my eye power is sph = -2. 75 for both eyes and no cyl power and V. A. is 6/6 for both eyes before COVID I used to go out and play well in outdoors and there is no screen time only books and playing cricket.but recent corona situation I am simply sitting home and using mobile more than 15 hours a day and I not eat any good diet 🥦🍎🥗🍌 .And now I am  getting some headache around eyes and eye brows and front head and I feel my eyes are strained out and feel exhausted so I decided to make my body and vision healthy. So please suggest to get my vision and healthy eyes back.