[@LuckyBlackCat]fighting type is one of the few that has alot of pokemon with a second typing.
For example:
Lucario: steel/fightinh
Blaziken:fire/fighting
Gallade: psychic/fighting
heracross: bug/fighting
Breloom: grass/fighting
Poliwrath: water/fighting

With this kind of team, you apply for gym leader or a member of the elite four. You can exploit stab and weaknesses.