How to pick which bot to play against

How do I:

1- pick the bot I want to play against
2- pick 2 bots to fight each other

1. Challenge the bot like you would any other player. See "Lichess Bots" team for a list of bots (lichess.org/team/lichess-bots). Just pick the weaker ones so you can stand a chance.
2. You can't, one bot must challenge the other for a botmatch.