Steering wheel will not unlock - 1983 Chevrolet S-10

https://www.youtube.com/watch?v=d9dEOtFgKDc
Method 1 Unlocking Your Steering Wheel

1. Insert the key into the ignition. ...
2. Turn the key gently. ...
3. Apply pressure to the steering wheel. ...
4. Do not shake or rock the wheel. ...
5. Pull the key out slightly before turning it. ...
6. Turn the wheel and the key at once to unlock it.

https://www.wikihow.com/Fix-a-Locked-Steering-Wheel

Cause!
One of the most common reasons why a steering wheel won't lock right is that the detent is broken or worn down. If you don't know what the word detent means, then don't worry. The detent is basically "the catch" part that makes sure that your steering wheel locks into place.
https://carroar.com/steering-wheel-wont-lock/

Have the batter's gone flat in key fob

You may have to try turning the wheel while you turn the key. If your tire is against a curb it can force the steering lock and that will make it hard to unlock the steering column. You may have to turn hard to get it unlocked.

turn key and move steering wheel.left and right.

Its going to be inside the steering column near the ignition switch. When you turn the ignition it unlocks the steering lock. You can't really manually unlock it unless you break the lock system

There might be a metal steering wheel lock release button under the dash in the steering column. but im not for sure on that. if you cant release it just get a flatbed tow truck. they will still be able to tow it.

HI,
is the vehicle on a full steerring lock left or right?
Apply the parking brake, Trans in P / N.
Insert the ign key.
Place one hand on the rim of the steering wheel and "rock" the wheel as you attempt to turn the ign key. You will feel the pressure against the steering wheel, keep "rocking" it and it should unlock as you work the ign lock.

Good luck.

try moving the steering wheel or wiggle the steering wheel and move the key to unlock. if that does not work the key lock cylinder needs to be replaced

In hope that you have the right key, put him in, try to turn the steering wheel a little bit at the same time you try to unlock the ignition.Sometimes it's possible that you've used your steering wheel as help wile getting out of the car. At this case, maybe the wheel lock snaps in, but the wheels are under pressure from the ground. Now you want to unlock your car at it seams that the key wont turn. The wheels get pressure from the ground, so the whole steering is under pressure and your steering wheel pressed against the locker block. If you try to turn the locked steering wheel, you'll see that it turns appr. 1" to one side. This is the needed space to unlock with the key. I hope that works in your case.

Typically, the steering is preloaded. This happens when car is turned off with some steering assist being applied (whether you know it or not).

Often you have to manhandle the wheel in one direction or the other while turning the key.