"As most people do, Bulgarians enjoy giving presents as much as they like receiving them.
Without the first clause, it sounds as if you are mentioning this as some special custom unique to Bulgaria, whereas it is common worldwide!
generally : what do you have in mind when using this word? It has the meaning, 'it is common to exchange gifts, but a fair number don't bother about giving gifts'. Which then seems to contradict your opening sentence.
exchanged at Christmas, birthdays and christenings, and
generally : repetition
most often opened straightaway.
I'm hoping 'straightaway' is not too colloquial, because 'immediately' is too cold and formal.
Expressions of delight and gratitude are expected in return."
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