How do I keep going after my team is gone?

You thought it was the work that mattered, but you are seeing now it was the people, the team you loved being part of. They have scattered, moved on, been broken up, and what remains is the same set of tasks stripped of the only thing that ever made them feel worth doing. That is a real loss, and it deserves to be named as one. You are not being sentimental. A team you loved is one of the rare good things a working life can give, and grieving its ending is right, not weak. Do not rush to fix the feeling. First let yourself admit that something genuinely good is gone. Then, gently, remember that what made that team precious was not magic, it was people choosing to show up for each other, and that can happen again. It will not be the same, and it does not need to be. Reach toward one new connection where you are now, or keep one old thread alive with someone who left. The tasks alone were never the point. Neither is your solitude. Start rebuilding the thing that actually mattered, one person at a time.