When something important ends, there are two ways to react.
One is to look within. Figure out why it ended, try and build resilience, be in touch with your own feelings and pain, imagine a way forward.
One is to look outside. Look for distractions, focus on someone or something to blame, numb feelings and pain with temporary rewards, move frantically in the moment.
Most often, the two coexist. But you can’t really move forward until you have spent a good deal of time in the first state.