Thanks to Karma's K/D/A and utility, she has a somewhat poor overall win rate. She does best in the early game, with a winrate of 50% in that phase. Unfortunately, she does poorest in the late game, where Karma's win rate is 45%., The difference between her best and worst game phases is about 5.0%. This large difference shows us that her power spikes and wanes in different phases of the match. Prepare well.
In the current meta, Karma is somewhat popular. She has been used in 3.8% of recently ranked rounds. Hardly anyone sees her as a danger. She has only been banned in about 0.6% of League of Legends rounds.
You can see her typically used in the support position. The top win rate position for Karma is support (48,1%). At this time, Karma's meta game is focused on dealing damage. In particular, her gameplay should mostly be focused on magical damage. Moreover, she is a pretty good tank champ. Dealing physical damage is the least significant part of Karma’s gameplay.
You should anticipate having to dedicate a decent amount of time practicing and learning to get good at playing Karma. Most LoL players believe she is an average difficulty champ to get good at. Karma mostly does magic damage (88% of her total damage). She doesn't deal much of other damage types and should not be played as hybrid damage dealer..
Karma deals a small amount of damage in a typical game (11.076 damage). You probably shouldn't focus on building her as a damage dealing champion to crush your foes. Rather, focus on covering your teammates to beat your enemy.
If you are looking for a dominating damage dealer, then you should definitely not consider this champion. She has one of the lowest kill rates in the game among all champions. Moreover, she has a fairly typical death rate with an average of 5.6 deaths per League of Legends game. Additionally, Karma's KDA is typically very high with an average KDA ratio of 2.5 as well as 12.1 assists per game.