Not played an awful lot so far but I think you only need a few games to see what the game is about on a casual level.
I expected it to be really tough as I'm new to KBM gaming but it's actually pretty simple, especially compared to a game like R6:Siege, which I had hundreds of hours in on console and is unplayable for me because the movement and everything is so tricky.
The playable characters all have fun abilities and I can't wait to try them all. The last game I played, I chose Sage, she can throw orbs on the ground which makes a pool that slows the enemies and she can raise Ice walls so you can cut off lines of sight, block off lanes entirely unless the enemy destroys the wall or raise yourself up onto places that can't be reached otherwise, her third ability is a healing orb which can be thrown at teammates or used on herself. It makes each round interesting, deciding how you will use the abilities and you can be really creative with some of the plays you make, which I really like. Each character has an ultimate ability also for extra game changing possibilities.
Probably gets a bit repetitive after a while but these kinda games I enjoy being able to play 1 or 2 games every other day or something.
Pretty nice game for anyone new to KBM who likes tactical FPS games.