I can show you proof on why wrestling is not sunnah here, here is a hadith saying that the prophet had wrestled:
Ali quoting his father said: Rukanah wrestled with the Prophet (ﷺ) and the Prophet (ﷺ) threw him on the ground. Rukanah said: I heard the Prophet (ﷺ) say: The difference between us and the polytheists is that we wear turbans over caps.
This hadith is ranked as daif
Here is another main hadith that people use:
Narrated Abu Ja'far bin Muhammad bin Rukanah:
From his father that Rukanah wrestled the Prophet (ﷺ) and the Prophet (ﷺ) won the match. Rukanah said: "I heard the Messenger of Allah (ﷺ) saying: 'Indeed what distinguishes between us and between the idolater is the turban over the cap.'"
[Abu 'Eisa said:] This Hadith is Hasan Gharib. Its chain is not established, and we do not know of Abu Al-Hasan Al-'Asqalani, nor Ibn Rukanah.
This is also ranked as daif, daif means not authentic so it is not a reliable hadith to use