Short straightforward sentence please tell me if grammar is OK??

I tried correcting these sentences, Could you please tell me what you think grammar-wise?

- I won't be able to work ever again. OK
- You need to know whats where. OK
- I saw him in action.
- You're not meant/made for this job. BOTH
- The rose to fame just as fast as they lost fame.
- I knew he would stop by right when I left/was leaving.
- If she was ever to talk, you'd lose your job. WERE ever to talk,
- The train is the second most used means of transport after the car.

Thank you