@Mario *******
If you have at least 500,000 THB (or equivalent) in your personal bank account, the main financial requirement for the Soft Power category is met.
If the funds came from the sale of your house or previous business activities, you can explain and document that in your application.
A monthly income is not required for the Soft Power category, so selecting "self-employed" with no income or "unemployed" with no income is generally acceptable if it reflects your current situation.
As long as the rest of your documents meet the requirements, your application can still be approved 👍