Luna Rising by Sloane Murphy (The Shadow Legacies I Book 1)

I want nothing more than to escape my destiny.

Being alpha born means walking a path that's already been laid out for me, with a mate I don't get to choose.
On a Lycan's 21st birthday, we are fated to find our true mate. Only, I don't want one, I'm not ready yet.
I want to travel and see the world, but I can't do that either.
When our world comes under attack from a foe we thought long vanquished, everything I thought I knew gets flipped upside down.
With nowhere to turn after my mate rejects me, feeling suffocated by my own skin, I leave my pack to try and find myself... but get found instead.