Do I need to improve myself or are my exes right for saying there’s something completely wrong with me?

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10 mo
I've been told many times to act a certain way because their other gfs were so hard to maintain. I myself am a chill, deep and confident person. However, they told me they didn't want to discuss serious stuff, didn't want to spend time w me on NYE and even called me negative and 'not wanting to improve'. The damage they did to me is still left behind in my system. Do you guys really think I might have been the problem? I just don't want to mess up anymore ever again.
Do I need to improve myself or are my exes right for saying there’s something completely wrong with me?
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