waste (something) on (something)

Translations
тратить (что-то) на (что-то)
Don't waste your money on things you don't need.
Не трать свои деньги на вещи, которые тебе не нужны.
Definitions
To use or spend something, such as time, money, or resources, in a way that is considered unproductive or not beneficial, often on something that is deemed unworthy or unnecessary.