What Subnero said.
For example, in the newest update, after you defeat Dahlia and Gloriosa, you can see their fighting scene.
Dahlia uses 'magical leaves' while Gloriosa uses her 'whip' to attack you.
Generally speaking, Succubus prefer to use magic, since they aren't, generally speaking, physically strong and the vast majority are already "born" gifted with magical power, which is far superior to physical attacks even if they were stronger anyway.
There are exceptions, of course, as the clans vary a lot from each other. The Hellish Clan is very strong physically and they prefer to go into battle with big blunt weapons. Or the Crimson Blood Clan who are cursed and due to this have developed a stronger and quicker body.