It takes time and effort to get back your girlfriend's opinion of you, and here are some suggestions:
1.Communicate openly: Communicate openly with your girlfriend, listen to her specific opinions about your naivety, and show understanding and respect. Ask her about her expectations and needs, and show a willingness to make changes.
2.Grow and mature: Look for opportunities to show your maturity and sense of responsibility, such as showing decisiveness and steadiness in work, life, and dealing with problems, showing your maturity.
3.Respect her thoughts: Respect your girlfriend's ideas and show that you will take her opinion seriously and not take her feelings lightly.
4.Proof of action: Prove your maturity and sense of responsibility through practical actions, take on more housework, care about her life, plan for the future, etc., so that she can see your change.
5.Give gifts or show care at the right time: Give your girlfriend a gift or show your concern through actions to make her feel your heart and change.
Most importantly, listen to her true thoughts, respect her feelings, and demonstrate your change and growth through actions. Don't expect it to happen overnight, it takes time and effort to win back her trust in your views.