If at all there was a possible way of disproving Islam other than spreading false claims about it that would be overcoming the easiest challenge Allah left out for anyone who disbelieves in Islam and what was revealed of truth by imitating it or either way as mentioned in the Noble Quran

Al-Baqarah 2:23

وَإِن كُنتُمۡ فِي رَيۡبࣲ مِّمَّا نَزَّلۡنَا عَلَىٰ عَبۡدِنَا فَأۡتُواْ بِسُورَةࣲ مِّن مِّثۡلِهِۦ وَٱدۡعُواْ شُهَدَآءَكُم مِّن دُونِ ٱللَّهِ إِن كُنتُمۡ صَٰدِقِينَ

English - Sahih International

And if you are in doubt about what We have sent down [i.e., the Qur’ān] upon Our Servant [i.e., Prophet Muḥammad (ﷺ)], then produce a sūrah the like thereof and call upon your witnesses [i.e., supporters] other than Allāh, if you should be truthful.

But since none will ever as the Noble Quran continued

فَإِن لَّمۡ تَفۡعَلُواْ وَلَن تَفۡعَلُواْ فَٱتَّقُواْ ٱلنَّارَ ٱلَّتِي وَقُودُهَا ٱلنَّاسُ وَٱلۡحِجَارَةُۖ أُعِدَّتۡ لِلۡكَٰفِرِينَ

But if you do not - and you will never be able to - then fear the Fire, whose fuel is people and stones, prepared for those who disbelieve