Re chosen teams

I love the game but what I dislike is hat you cant change your teams.my family is on team mystic but me loving fire types went on valor but know when they fight a gym I think I wish I was on mystic so I could bound with my family more. For theme I am the Pokémon wiz and know most to all pokemon so I would just be happy to play on the same team with my family

HunterHyena2336 about Pokémon GO, v1.39.1