The President of Hungary acts very childish, if he is against Biden he should not openly and publicly post it and just make it personal if he wants to bet against Biden, what he wants to prove here, that he wants to please Trump?
His action back fired now he wants to make amends by congratulating Biden, not really good move for the current President of Hungary.
This was very much surprising for me as well as why would do this public like when he knows its already Biden who has won the election. Also, wondering what the reaction of the citizens of their country would be when President do such things openly and can have some consequences in future of it.