>>26736755Bug is weak to Fire, Flying, and Rock. I know it resists Fighting and Grass.
Fire is weak to Rock, Ground, and water. Fire obviously resists Fire, and I think(?) Bug resists Ground, so those two would be neutral.
You would be best off using a Rock-type move, and if you don't have one, use a Water- or- Flying-type move.
I can't name all the resistances, but I know what hits it super effectively and I know plenty of common types that hit it neutrally like Normal.
Furthermore, if you're a kid and don't know this or don't know the opponent's Pokémon is Fire/Bug, that's half the fun, discovering that it is.
Like I mentioned in
>>26736756 you could just have an in-game type chart for players to look at, you don't have to literally hold the players' hands telling them what moves to use.