but i dont have money because my players salaries are really high.
You answered yourself.
Tell us what are your plans for upcoming seasons. Do you want to promote? If yes, when? Note that when you want to promote, you need a really strong team. When you know you can't promote yet, you can have a fairly weak team.
If you will have a high-salary team no matter your goals, you will always be without money. Build your team according to the plans you have. It's no use to have a team that can fight for 2nd place, as only 1st makes you promote. I know there are bot cleanups, but for the sake of argument let's say there aren't any.