If you don’t have enough money then its not farz for you.
Also according to Quran at that time people travel from far aways and there was not a proper arrangement of food for the travelers and people used to do hunting or Animals upon which they travel were allowed after when you performed Hajj only on 10 of zilhuj.
Also what i understand Quran not a rituals like hindus performs. Its a huge conference for ummah to introduce the direction(Qiblah) of Allahs law to the whole humanity. Thats why where-ever Hujj comes in Quran it comes with annas “A direction for whole Humanity”
When Deen become Mazhub then it becomes Rituals. That is against the Quran.
They is no mandatory sacrifice of animals at in quran period.
Al-Furqān, Ayah 25:30 : They left Quran
وَقَالَ ٱلرَّسُولُ یَـٰرَبِّ إِنَّ قَوۡمِی ٱتَّخَذُوا۟ هَـٰذَا ٱلۡقُرۡءَانَ مَهۡجُورࣰا﴿ ٣٠ ﴾
The Messengers will say, “Lord, my people had abandoned this Quran.”