The best way to adjust your binoculars is to take off the big cap from the left exit lens or objective lens (leave the right cap on the right exit lens or objective lens).
And look through with your left eye, and adjust the rotating knob or center focusing ring between the two barrels by rotating them left or right to zoom until you get it just right.
Now take off the cap from the right exit lens or objective lens and place them on the left exit lens or objective lens, now look into the right side eyepiece and see if you’re seeing the image looking the same as the left side eyepiece!
If not then right up to your eyes there is an adjustment which they call “the Diopter adjustment ring” turn it either left or right very slowly until, you can see the object perfectly with your right eye.
Now remove the cap on the left exit lens or objective lens and you should now see the object perfectly. Hope this helps.