[justajot]

It sounds like you enjoy being part of a team where there are plenty of opportunities for personal growth. And being an unchallenged lead developer constantly fixing everybody's problems doesn't provide this, and just furthers the feelings of loneliness. Is this about right? Or am I off?

What would you ultimately like to accomplish with your development? For example, is there a specific problem domain that you would love to help tackle that is maybe beyond your current capabilities?

Who would you love to work with? What might working a different team altogether look like for you?

Ultimately you have all the answers. If I were to provide any advice, it would be seeking out a career coach who can help you bring clarity on where you're at and where you want to be.