The Otranto attack was a large-scale raid. If fully successful, it might very well have been followed up with an invasion.
But no attempt was made to reinforce the Ottoman garrison, probably because the Sultan died and as usual there was squabbling over the succession.
No further attempt was made to invade the Italian mainland, other than coastal raids to plunder and capture slaves.
So the invasion wasn’t successful because the Sultan was killed? Doesn’t sound like a raid to me.