Warrior General Games

But is possible that a new character doesn't find a team? This game is so blocked?

Humans don't control anything lower than a Level 13 team, which means few if any would be interested in a Level 7 DT. Your best bet would be to sign yourself to a Development League team for another season - but you HAVE to do that before your guy gets to Level 8 (D-Leagues cannot sign players Level 8 or higher).