The Brazilian scored his first Premier League goal at St James' Park in the 3-0 victory over Sheffield United - and delivered a message of praise for his manager Bruce.
"When he arrived, he came under a lot of pressure, part of the crowd didn't want to, because of his old work," Joelinton told ESPN Brazil.
"A nice guy, hardworking, but who charges and is a friend, always with a strong word.
"The crowd acted in a way wrong with him as soon as he arrived. He's doing his best.
"For me, he's a great coach."