Me [18M] and [19F] are going through a rough moment, please help.

Well a few days ago me and my girlfriend broke up and during that time she stated that we arent meant for eachother that was all, 2 days later i reached out about her clothes at my place still, we started talking and found the main issues of the breakup, i played to much video games, not enough attention, didnt want to meet her friends (i did she forgot but i still was open to working on that) we started talking again romanticly just not fully dating and than 2 days after that (last night) she was done with my so called bs, she wanted me to stop talking to these girls, which i had no issue with i unadded them on xbox and left the snapchat groupchat i forgot to unadd them there, now she doesnt trust me and is fully done, yet i want her back. last night during the emotional storm i tried my best to do what i can to salvage, she wants to call in a few hours to talk about it and maybe talk in person after, ive tried everything i can and im out of ideas, im looking for help on what to say, whats the right approach and if waiting a few weeks to months ever actually helps and is possible to get back with that person, i feel like after a month the chances for reconnecting are completely gone, i am just looking for direction.