Should I feel guilty

I was dating a girl for past 6 months. In some recent times she started giving me less and less time. She didn't value me. I had a feeling she lost interest in me. Whenever I tried to talk to her we always had an argument. I tried my best and at last I just walked away. I thought she didn't value me enough. I loved her so much but all I got was just anxiety and depression. 🙂😌🙂🙂 But when I think about her I feel bad but I couldn't live like that. She didn't put any efforts to save our relationship.