It is highly unlikely they would go into a conflict with so few planes.
Whatever you're smoking, I could do with some.
Nothing is ever certain, but when it comes to defence procurement I would say that the carriers are as safe as they could be. Contracts are being handed out and both the top political parties are committed to the project.
The idea of selling them to India or China is absurd. India is building its own carriers. We would never sell aircraft carriers to China because of the way it would upset the balance of power in Asia and annoy the US and Japan. It would also go against the EU arms embargo which won't be lifted in the foreseeable future.
Given such daft comments I honestly question your knowledge of military matters or your motives - you're either ignorant or trying to talk the Royal Navy down.