As I have pointed out before, there are no Alphas. The term applies to canines, and refers to the Alpha couple, which was the only ones that bred, to limit the number of puppies born.
You can of course apply the concept to people, but words - and concepts - are not reality. To say that human Alphas exist does not mean they do. Words and concepts have to have clear, specific definitions. Otherwise they can mean anything, which means they mean nothing. The concept of "Alpha" has so many definitions it means nothing.
The map is not the terrain. The same applies to the concepts in our heads. They're models of reality. The closer they conform to reality the better they work. Since the concept of "Alpha" is a poor model it doesn't work very well. If fact, it's such a poor model no one can agree on what it means!
Philosophically, this is a problem known as "concepts and their referents." What exactly do mental concepts refer to? Is an Alpha a good-looking, confident, wealthy guy who gets a lot of women? Tameran was good-looking but that was it.
As for devoting your life to fucking women, I know guys who count is about 100 women. Every one of them has ruined his life. Every one of them wishes he could do his life over. Every one of them is a liar and a coward. The old term "cad" applies to them. Not "Alpha." (One of these men told me, "I finally got a taste of my own medicine.")
As for Tamerlan, he was on welfare, and was supported by his American wife while he took care of their child at home. He was unemployed. (Both brothers were dubbed "losers" by their own uncle.)
He also was a mass murderer who killed innocent people, including women and children.
Instead of believing in delusions about non-existent Alphas, let's apply some age-old wisdom. The Four Cardinal Virtues.
I'll first point out all four of them are interrelated; if you don't have one you don't have any of them.
Bravery is one of the Four Cardinal Virtues. Any man who sets off bombs in a crowd and mass-murders innocent men and women is not a brave man.
Prudence is another one of the Four Cardinal Virtues. Tamerlan lived on welfare and off of his wife. Not very prudent, I said.
The Third: Justice. Murder of innocent people and mooching off the government and his wife. That's justice?
The fourth cardinal virtue is Self-Control. How much self-control does a man have when he quits everything he tries? Boxing and school, for two examples.
I see nothing admirable whatsoever in Tamerlan's character. The more confused in the Manosphere think he's an "Alpha" because he married a ditzy insecure American woman who converted to Islam. That's scant evidence to support claims of Alphadom.
Thinkers in the past have covered these concerns in detail. That's how they discovered the Four Cardinal Virtues, which are not religion but good practical wisdom on how to lead a successful and happy life.
Obviously Tamerlan did not lead a successful and happy life. He was a weakling, a poseur and a loser who used bluster in place of confidence and competence. Otherwise he would not have done what he did.