Why did my ex choose her new fiancé over me, and can I do better?

Hello and thanks in advance!

so, the pictures below is me. I was with this girl for 3 years and engaged. We been split up over a year now and she is engaged, sold her house, and living with this guy now. I changed my number so she couldn’t ever contact me again. I’ve been working on myself a lot lately and learning from my past failures to be a better man mentally and physically. I tried working it out with her 6 months ago and she wasn’t having it and brought up the hurtful things i said to her while i was mad. Is this new guy look better than me? Why would she choose him over me? Can i do better than her look wise?

Why did my ex choose her new fiancé over me, and can I do better?
Why did my ex choose her new fiancé over me, and can I do better?

this below is my ex and her new man.

Why did my ex choose her new fiancé over me, and can I do better?
Why did my ex choose her new fiancé over me, and can I do better?
Why did my ex choose her new fiancé over me, and can I do better?
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