it's normal that you don't want to understand because you think that only Bahaullah did know its interprtation
It's not I just think. Quran Prophecied about Baha'u'llah and the Interpretation of Quran to come:
"a Messenger from God, reciting pages purified, therein true Books." 98:2-3
al-Baiyinah 98:3
' رَسُولٌ مِّنَ اللَّهِ يَتْلُو صُحُفًا مُّطَهَّرَةً فِيهَا كُتُبٌ قَيِّمَةٌ'
Noticing, the Word here is 'Books'. Plural of Book (كُتُبٌ
To Prophet Muhammad God revealed only One Book. The Holy Quran.
To Baha'u'llah many Books. Baha'u'llah revealed them in pages (Sohof)
And As Quran said, the interpretation of Quran was to come:
"Now we have brought them a Book explaining it in knowledge, a guidance and a mercy to a people who believe.
Do they wait now for aught but its interpretation?− on the day when its interpretation shall come, those who forgot it before will say, ‘There did come to us the apostles of our Lord in truth, have we intercessors to intercede for us? …"(7:53)
هَلْ يَنظُرُونَ إِلَّا
تَأْوِيلَهُ يَوْمَ يَأْتِي
تَأْوِيلُهُ يَقُولُ الَّذِينَ نَسُوهُ مِن قَبْلُ قَدْ جَاءَتْ رُسُلُ رَبِّنَا بِالْحَقِّ فَهَل لَّنَا مِن شُفَعَاءَ فَيَشْفَعُوا لَنَا أَوْ نُرَدُّ فَنَعْمَلَ غَيْرَ الَّذِي كُنَّا نَعْمَلُ قَدْ خَسِرُوا أَنفُسَهُمْ وَضَلَّ عَنْهُم مَّا كَانُوا يَفْتَرُونَ
Thank you God for fulfilling your Promise. You do not fail to fulfill your promise.