My girlfriend is a very traditional girl.

Really touched her, girls like people who really care about themselves. As you said, her personality generally won't say that she loves you, but in her heart she is more sensitive than anyone else. Although you don't have a good job now and your income is not high, you can consider yourself a responsible person, but you can prove by actions that you will try to make your life better and make her feel that you are a self-motivated person. So she won't feel that being with you is not gambling with herself. It's important to make her feel safe. Good luck, you will find beauty again!