I’m really confused please help

So Iv been with my gf for basically almost 5 years we have broken up before where she left me then came back we’ll recently I hadn’t seen her since 2016 October because I didn’t have a car and she mostly just wanted to see me in a car as she said someone might see us on foot as our families already had issues...but I was struggling to get a car I just passed recently this year in January and I’m only 21 I was struggling with money so I said to her il see you on foot till I get a car..but she’s like now il wait till you get a car..

Slowly I could tell she was losing interest from her lack of communication so I asked her if she’s losing interest or likes someone else but she’s like no I love you everything is still the same etc fast forward a month later she breaks up saying she wants to be single and doesn’t want a relationship later on she tells me she’s fallen for someone else and doesn’t have feelings for me.... my point is am I the one to blame because I asked her numerous times to see me on foot also I asked her if she likes someone else why won’t she more honest with me