Heya, I am gonna explain ya'll on how to become better at this game. From beginner to pro.
For Beginners: The first thing you should do is, Use trainers. This is what trainers are for, They are meant to train you. (Trainers are located infront of the cafe aka Coffee Shop)
The first thing you should focus on is speed and physical, Your speed should be 200 and your physical 100 so that you can dash almost for infinite. (200 speed to dash with no cooldown, And 100 physical to make a longer lasting dash. Combining those 2 actually help you dodge most attacks.)
Then after you did that, You should focus on your kagune and durability.
Enable your shift lock so that you can use your dash to dodge most attacks, And aim for surprise attacks.
Decent: If you still have some trainers. Use them. If you don't have 200 speed or 100 physical (or both), You should go for these. After you have both of them, You can go for durability and kagune. (Enable shift lock to dodge most attacks or aim for surprise attacks. 200 speed to dash with no cooldown, And 100 physical to make a longer lasting dash. Combining those 2 actually help you dodge most attacks.)
Pro players: Defeat eto. (For rc and yen of course)
For Everyone that want lots of RC/Yen: You should go near jason's building and look for the triangle. Keep attacking those 3 Aogiri and you'll notice they'll respawn with no cooldown. After that you repeat the triangle till you think it's enough. If you do this non stopping. You can reach a million rc or over in a day.
(This method requires alot of patience)