I ask in forum because i want to make friends to play with, not only play with unknown players on the online mode.
If you spend time on ICO, you'll soon get to know people and make friends. If you're concerned about having to play against highly-skilled players, you might consider starting out playing comp stomp games (humans v. AI) where you won't have any human opponents but you'll get to know your allies and perhaps become friends over time. Many people play comp stomps online. Once you start to feel more comfortable about it, you can start playing against your friends or other people. Your best bet is probably to just dive right in. At least come online and play comp stomps.