It’s highly unlikely you’re deformed -lol. More than likely your fingers haven’t learned independence. Fingers share tendons, and it is difficult to teach them independence, but it’s not impossible.
One way to teach them is to start a little higher on the neck (just because it’s less of a stretch). Place your index down, and leave it in that spot the whole exercise (do not lift it). With your middle finger, place it on the fret next 5o the index.; then lift it and place it on the next fret and then back to the fret next to the index. Then lift again and place it 2 frets out.; lift and back to next to index. Again lift and go 3 frets out. Try and get to 4, without hurting yourself.
Next, take your ring finger and do the same exercise. Then your pinky.
Once you’ve done all that, lift your index, and replace it with your middle finger. Again, do not lift it. Begin with your index and do the same exercise, then ring and pinky.
Same exercise with ring and then pinky being anchors.
Once you’ve done can do this with all combinations, start over, but move up 2-3 frets. It will be a little more challenging, because the frets are wider. Repeat until you reach the first fret. With your pinky.
You can always switch it to where you begin with the pinky and not the index. What this is teaching is finger independence for every combination of fingers, and it helps with stretching fingers.