@CEOofRonova usually ascending order of damage provided to the team, with some rules:
characters with the same element are always adjacent somehow
transformative drivers(so anemo/geo supports) are always slot 1
healers/shielders are always as close to slot 1 as they can be
i hate when people give "do things you enjoy" as advice for depression like no bro the problem is that i cannot enjoy things anymore. like nothing brings me joy.