Any tips?

Ever since she broke-up out of nowhere with me (a bit more than a week ago) I'm having a rollercoaster of emotions. The last 2 days I was very confident and happy, because I knew she lost someone who would do everything for her. I only lost someone who was willing to give up once she felt the love was fading without communicating her feelings to me. And I really also started to believe this was for the better like this. But then there come days like today, where I just cant stop thinking why she's giving up and not giving us a second try to fix our mistakes. It feels like what we deserve after 2+ years without any major split or figth. I just wanna reach out to her and beg her to give us atleast another month to try, because our mistakes would be easily fixable. But I know it wont help. Why cant I just have a day like yesterday where I was able to deal with it :/ I get so many flashbacks of our good times. I cant even read the list I made with bad things about her without thinking about all the good memorys we made together. They just appear like pictures in my head and it hurts so goddamn much....

I know time helps, but time just doesnt feel like its passing. The last week felt like half a year...

I just want to know deep in my heart, not just tell it to myself in my head, that its over for good and I will get as happy with someone else as I was with her. It just doesnt seem possible for now.