Except that if I want to save a considerable amount of money, but in bitcoins.
Then print a paper wallet, put it into a safe place and move your bitcoins there.
if I create a paper wallet and move my bitcoin there then how can I send bitcoin to someone if I need to? what do I do to use it?
Paper wallet is safe but is not as user friendly as offline computer. Mycelium has a feature which allows you to spend money from your paper wallet by scanning a Qr code. However, it would not exactly qualify as safe if you were to use your phone which you use daily as it would be exposed to the internet. Buying an android phone isn't viable as purchasing a raspberry pi and install electrum on it.