Manifesting money out of thin air has to do only with your ability to give/invest money. If you feel resistant to give money or pay for things you will struggle with receiving it.
On the contrary if you know that the money you have on your bank account is not the source of you having money, if you know that your inner state is the only source of your finances, you won’t struggle to invest or give money away.
The more on ease you are when you invest your money to the universe, the easier it will come to you multiplied.
What I personally apply here is the content of the book “Seed money”. You can find it for free on YouTube. Apply what it says and you will never struggle with manifesting money again.