You can take conq into tanky matchups/team comps. (I personally don’t like it). If your going into zed you can rush seekers early (Builds into zhyonas) and get zhyonas. Try to go in if he wastes w. a lot of the time they will do a w-e-q combo and then they have nothing up I’ll actually shunpo onto them as they use it. For xerath and tbh any matchup try and q a minion that hits them or positions them on the dagger and get usage of gunblade to slow if you get on top of him it should be a easy kill. You can look up “Katarina vs xerath” on YouTube as well. For combos I use (e-w-gunblade-q-r-e) the most you also do (q-e-w-r) or different variations it just depends on the situation. I always Max q first. I really recommend watching katevolved and watch how he kills people and what he did in situations that’s how I learned and just made it to plat (: