Are you asking if it would be possible to make ‘your’ bot cheer in someone else’s stream chat?
If so, the bot you use would also have to be used by the other streamer, but it would be against rules, as it isn’t YOU cheering. It would be you triggering a cheer (e.g !Cheer) which would cause the Bot to have to use it’s own Bits (if that is even possible) to cheer, meaning you would not have spent any money.
Also, just typing in “Cheer100” will cause you to donate a dollar, the extra step of making the Bot do it isn’t needed 