Goals And mortages

Hello, I have a question, I don't know if I'm doing it wrong but, I have a mortgage and I made it as a goal, I think that for the moment it is the only way to do it. The fact is that when I go to the monthly or annual expenses, that mortgage information is counted as income, not as an expense, since it is a goal. Is there a way to do it so that it is considered an expense?
If not, could you put a function for such a problem? I think it is something essential to be able to see your expenses and income. Thanks greetings.