Why Shield + Bomb wins
Boneca Ambalabu and TungTungTung Sahur both start with Shield (the strongest defensive move available this early) and Bomb (a reliable offensive option). That combination lets you soak hits and deal damage from your very first fight.
Skip Frulli Frulla
Frulli Frulla's move set is weaker, so skip it. Since the two recommended starters share the same move pool, their performance is essentially identical, and you can pick either one on preference alone.
Don't get attached
Do not delay wild hunting because you are attached to your starter. Golden Box unlocks matter more than starter sentiment in Catch a Brainrot. Your starter is a tutorial tool, not your late-game carry.