"The demands on the players here at the World Cup are huge", Ronaldo, who won the World Cup in 1994 and 2002, said in a TV Globo broadcast.
Referee Björn Kuipers awarded the penalty, before consulting the VAR and reversing the decision.
Neymar wrote: "Not everyone knows what I've come through to get here".
'The cry is joy, overcoming.
"Things were never easy in my life, so why would they be now?"
There were incredible scenes as Brazil scored twice in stoppage time to seal a monumental 2-0 victory over Costa Rica - and the reaction from the Selecao bench was utterly incredible. The dream - no, the OBJECTIVE - is still alive.
Brazil's forward Philippe Coutinho (left) shoots to score a goal during the Russian Federation 2018 World Cup Group E football match between Brazil and Costa Rica at the Saint Petersburg Stadium in Saint Petersburg on Jun 22, 2018.
To be fair, Costa Rica had planned to be physical with the Paris Saint-Germain star, fouling him on different occasions to stop him from making a run towards the goal.
Neymar faced the most devoted of markers in Costa Rica's Cristian Gamboa, the Brazilian spending most of the half hopping over scything tackles or dodging past a barging shoulder. When I gave the ball back, he cursed me a lot.
Tite said that Neymar, who endured a lengthy spell on the sidelines with a metatarsal injury before the World Cup, is still regaining form and full fitness as Brazil's Group E campaign unfolds.
It looked for a long time as though Navas would keep Brazil at bay as he kept out Real Madrid teammate Marcelo and Coutinho before the break, and there were better saves to come in the second period. He is a human being, he needs time to reach his high standards again but before that there is a team that needs to be strong and not dependent on him. Tite fell to the floor as he sped onto the pitch following Coutinho's strike.