How do I get my apple trees to grow?

Here is how to grow apple trees.

https://www.almanac.com/plant/apples

https://www.finegardening.com/article/tips-for-growing-apple-trees

https://youtu.be/_Km5hyS8So4

What zone are you In? When in doubt, contact your local Ag Extension or visit a reputable local nursery that has a Master Gardener on staff. Or even have a consult with an arborist.

I found one article that said: An apple tree without fruit may not be getting enough sun or water. Poor fruit production can also be caused by over fertilizing.

Then I found another article that said: Left to wander wildly apple trees can get too tall for easy harvest, may bear fruitonly at the tops of the trees and may produce many apples but fruit will be small and misshapen. Apple trees may also show biennial bearing in which fruit is produced every other year.

Then I found another article that said that a seedling of any apple variety will grow into a tree from 12 to 20 feet high and take six to 10 years to bear apples. So it may take a few more years.

The damaged one growing suckers can be saved pick the strongest new central growth"sucker" and keep trimming off others it will eventually become strong main tree you want. You keep trimming off the fruit and limbs that the tree needs to produce fruit. Let it do what it does naturally-grow. Leave them alone.They are producing so many suckers because you are cutting on it so much.If it produces fruit let them mature then eat them. trees plants know what to do without so much "help" just water them