I suppose that's natural and healthy, so long as you figure out how to channel that angry energy. Anger is, after all, a necessary motivation tool to push through whatever angers us.
Agree.
However, most guys get angry at girls, instead of their skills with girls.
There's the rub.
Most guys are a slave to the ego and lack the introspection to ask themselves: "how did I fvck this up? what AFC moves did I make? how could I have handled the STR/LTR or approach better?"
I've found the best success I've experienced in self-improvement immediately follows a breakup. I've written about that in previous posts. I used my latest breakup to help me to channel all that anger, hurt, and rejection into the gym and bulk nearly 30 pounds. I feel worlds better, yet still have some inner game issues that still need care.
Essentially, if one takes a hard look at himself and does a deep dive to figure out how to improve, down the road success should theoretically improve. *edit* This needs field testing. I can at least report that I've had more IOIs this summer from girls that were previously not interested when I was 136 lbs. Since the gain, I've been approached more or kino'd at social gatherings.
For the record, I don't think men should take 100% of the blame for the break up because it takes two to split. However, often enough, the man does enough to drive her interest level down which costs him the chance at a longer LTR or plate status with her.