From what I hear Real Madrid have turned their attention to other players, they are no longer obsessed with chasing Mbappe at least for next season
since Mbappe has extended his contract so there is no reason for Mbappe to leave in the near future. The news that I heard that Real Madrid will bring in new players from the Brazilian League a young player with great potential.
Do you mean the Brazilian wonderkid Endrick? Real madrid have already successfully signed him, though he won't join them now because of his young age, and he will only move to Real madrid in 2024 when he is old enough. I don't think i have read any news of Real madrid being interested in any other player from the Brazilian league, but it is possible that they are closely looking at some others, and they may make a move for them soon.
Mbappe is a psg player for now, he is under contract with psg and Real madrid have to turn their attention away from him because it will be too difficult and expensive for them to sign him now, maybe when his current contract expires with psg, but anything before that is too hard to achieve.