conmeo, hi.
combos L2+[] ?? (I used to think L2 help you go into tackles with more force)
The L2 + other buttons trigger the in-game strategies that you can set in Formation Settings -> Strategies.
So your leff index finger is going to spend a lot more time with L1 than L2. The other finger will be flipping between R1 (sprint) and R2 (run and/or side-steps).
The many combinations of :x: , :square: , :circle: , and :triangle: with those three 'shoulder buttons' (L1, R1 and R2) will affect players passing, crossing and shooting. e.g. L1 will send :triangle: thru-balls, or :square: shots through the air rather than along the ground.