Otherwise is one word. Also, this is a run on sentence:
For basic needs, we should have money; otherwise we will starve and die.
I fixed it with a semi-colon.
Look at the changes to this sentence:
Firstly, money has become a very important factor in everyone's life.
That is how to use an apostrophe: everyone's
If we don't earn money, this means we are nowhere. Nobody respect us and we fail to succeed with our own existence.
That means we become self-sufficient and independent.
This ability of self-sufficiency gives us ability to survive any where in the world. We don't need support of anyone
but we can be support of someone.
As my father saved money he was able to give money for her operation in one movement. ---- a very selfless movement! He is a hero.
To sum up, we should always save money,
as it is hard to earn and easy to spend.