Cape Town - Fred says he will work on getting over his disappointment of missing out on a place in the Brazil squad due to his inactivity with Manchester United.
The 25-year-old former Shakhtar Donetsk midfielder has played just seven Premier League games this season in a difficult campaign for the Red Devils, completing 90 minutes only three times.
He was omitted by Brazil boss Tite for the recent internationals but isn't blaming United manager Jose Mourinho.
Speaking to the Daily Mail, Fred said: "I've played little in the club and it's normal for professor Tite not to be able to evaluate me, even though I've worked hard with him.
"Of course, I was annoyed, but I have to know how to deal with the sadness also, to be able to help me take a step forward. I remain focused on my work and I hope to be back to the selection soon to be able to be in the Copa America.
"The coach Mourinho has chosen not to put me in the team, it's his choice. I still do my job and I can't let it affect my mindset, I cannot let that shake me. I have to be patient.
"It's a bit of a difficult start, I have not been playing so much. I've had a lot of games in Shakhtar, but it's a little bit different here.
"It's normal, a process of adaptation to a different league. Although I've been to Europe before, now I am in a different country and I have to go through a new process of settling in. Today, I see myself much better and I hope that my football will be 100 per cent soon."