I've played FIFA for about 12 years and this was a bit of struggle. This was the way I got it, which meant I could easily get close every single time
Run in the box with your striker as if you were running straight on towards the goal, turn around and pass it backwards to the edge of the box to your attacking midfielder. Tap square + L1 so that a ball goes in towards the striker and straight on towards to goal, like a lob pass - not from a cross, and hold L2 + O. If worked well the ball will float towards your striker and I found 9/10 they will actually pull off the bicycle kick with decent power.
This wasn't on any videos I watched but one of the comments suggested it.
Once I was doing this i was getting close almost every time and its a consistent way to pull them off.
Hope this helps in anyway.