Привет, Макс! Теперь я вернуться.

Hello Max, I have made a spelling mistakes in return, can you help me change it, please.
It should be вернутсься.

ура!

Привет, Макс! Теперь я ренулся!

Спасибо, Макс!

It feels like I have lost something in these sentences. Can you please correct the grammar in those if I am right about it, Max?

C Рождеством Макс и другой люди в России. В Швеции мы празднуем на 24 декабр (In Sweden we celebrate Christmas on 24th December, so ours has already been).

Спасибо, Макс!

Рbarcellona и Макс! Да боже, эти многие язык! (I am not a beginner in learning Russian, I have studied it for little more than three years, but it is still a lot I do not know) Mне нравится это тоже. (It was only these people in this dialogue I think so far are very difficult to follow, sometimes. But maybe I will become used to it) I like your podcast otherwise, Max!

Привет! С Новым годом всех!