ignition

You need to inspect the ignition switch cylinder lock-Try using the the override system- You have a key tumbler that has locked internally. Will need to do partial disassemble of upper column to access release for entire key tumbler replacement. You will need a steering wheel puller so if you do not have correct tools then have a shop do it.

what is the overide system and where is it located

Try turning the steering wheel at the same time you are turning the key. Also check this link out.

https://www.2carpros.com/articles/ignition-switch-wont-turn-stuck

let me know if you need anything else.