I joined a team back at the start of the game and I want to change to a different team. I have been looking around the games UI and I can’t find anything that lets me change the team that I joined. How do you change the team you are a part of in Pokemon Go?
You can’t. At least as of right now, once you choose a team at the start if the game. You are unable to then change the faction that you chose at any point after. You will need to make a new character and start the game again if you want to be able to change the team you joined. Maybe in the future the developer will release an update that allows us to change team, but as of right now you are stuck with the team you have.