manage (something) financially

This means to have enough money for something.

To "manage" to do something means to succeed, even though it's difficult:

I've managed to do OK.

How'd you manage to pull that off?

Your "finances" are the amount of money that you have. So managing something financially means having enough money (barely) to afford something. English speakers usually use this phrase in the negative form:

We can't manage it financially.

This phrase appears in these lessons: