The 21-year-old joined PSG from Sao Paulo in January, but has struggled to command a first-team spot in the early stages of the new season.
"I'm still adapting. I don't regret having signed for PSG. I'm still young, I have a lot to learn and a lot to grow," he told reporters at a press conference.
"Every player wants to score goals, but I've never really been one to score many goals, so I think I need to remain calm.
"The important thing is that the team continues to win and I'm always trying to help the best way I can."
Lucas had previously been strongly linked with a move to Manchester United.