It cannot be said for sure which formation Real Madrid will play in the next season. Madrid are most likely to play in a 4-3-3 formation. Because perhaps Ancelotti is keen to keep Rodrygo in his attack. But we saw Rodrygo miss plenty of easy chances. So Ancelotti is also likely to develop his match strategy in a 4-4-2 formation.
Yep. I also think Real Madrid will play again with their past formation 4-3-3. With this formation, Mbappe will be a centre-forward, Vinicius and Rodrygo will play as wingers. All of them will play in their best position, so they can play optimally. I am very sure Ancelotti will put the players into their best position in order to make them playing comfortably.
4-4-2 was just an alternative formation because Real Madrid has no strong striker (centre-forward) last season. Now, Real Madrid has Mbappe as a strong striker, they can return to their best formation again. With the formation 4-3-3, Real Madrid can be very strong in a counter attack tactic, they also can play more offensive.
Ancelotti is a very experienced coach. He is very well aware of the capabilities of his squad. And accordingly he will make his match strategy. With Mbappe in the squad, Madrid's attack has been strengthened. Mbappe has the ability to score a lot of goals. The squad also has talented players like Vini and Bellingham to support Mbappe.
Indeed. Ancelotti is a brilliant coach and he is very experienced. He must know how to plan the best formation for Real Madrid players. Ancelotti is well known as a friendly coach and he really understands what the players want. If in the last season some players play in a new position, it was because Ancelotti has no other choice.