I save money by not spending too much money.= too much.
Though= Although  I want to spend a lot of money, I cannot buy all of them= everything because there is a limited source of money.= financial resources are limited.
So, I try to save money wisely.

Evaluation: Your idea is clear and easy to understand. You explain your reason for saving money and show good awareness of financial responsibility. To improve, try to avoid repetition (like “money” too often) and use more natural expressions such as “financial resources” or “income.”