It is difficult to state why is your girlfriend is not acknowledging your relationship despite being in this relationship since a year. it can be maybe she isn't very sure of this relationship or maybe she has a different family setup and does not want it to come out in public by any means so it's difficult to say the exact reason without knowing the entire case. Meanwhile please practice to stay calm and understand her point of view and do not react impulsively,when you react too soon aggressively  most of the time you"ll be misunderstood.try talking to her calmly.

Address it in a calm manner Address your insecurities Also take therapy side by side Consult with me or any psychologist for therapy and counseling online AL the best

talk to her politely about your issues or consult any relationship counselor for the same

You need to improve your perception and decision making skills. It can be well corrected with counseling sessions effectively.

Hello there I can understand what you might be going through. You might be feeling low and bad as to why she is doing. It is from your side of the story. You need to talk to her in a calm manner what you feel about as well as try to understand things from her point of view. Don't worry, both of you can also opt for couple's counselling from a good therapist or a psychologist. You both can also contact me. Let's discuss both of your issues in detail so that you can reach towards your solution. Take care. Stay safe and strong. Everything will be alright. You got this!!

Hi... We can't comment on a specific case without proper session, but typically if someone is not acknowledging a relationship in public or peer group is less likely to be committed or seriously invested in that relationship.