You can care about her silently, buy her breakfast every day, leave it with her and ignore you. It must be something she didn't like when she fell in love with you. You must show that you care about her and take practical actions. Don't just talk without practice. Flowers and chocolates are useful tools for apologizing and expressing love. You must send messages to care about her every day, whether she comes back or not! Come on, you will save your girlfriend.
Hope to adopt