Also, what are your usernames and IDs? Make sure you add:
ATRL username - Game username - ID
Eternium - Eternium - 8859993888
Lulu - Croixxx - 6446391695
Homeslice - Xavey - 9026137613
I have a 6* Uda as a leader with SBB level 10 and it should be more than enough to help you in the early stages
I also take requests to change leaders.
Another sidenote, SBBs are activated by swiping about 45 degrees. Swiping up activates BB (brave burst), clicking attacks, swiping right (I always swipe at a 45 degree angle) activates SBB (super brave burst) and swiping down activates guard.