In The Name of Allah, The Most Merciful, The Bestower of Mercy.

Allah said:

وَإِذَا قِيلَ لَهُمْ لَا تُفْسِدُوا۟ فِى ٱلْأَرْضِ قَالُوٓا۟ إِنَّمَا نَحْنُ مُصْلِحُونَ
أَلَآ إِنَّهُمْ هُمُ ٱلْمُفْسِدُونَ وَلَٰكِن لَّا يَشْعُرُونَ

And when it is said to them, “Do not cause corruption on the earth (through your disbelief, sin, treachery, and sedition against those who believe),” they say, “Indeed, we are but reformers (who rectify and make peace).” Indeed, they are the ones who are the mischief-makers (in reality), but they perceive this not (due to their ignorance, disbelief, and arrogance). [1]

Imam Ibn Al-Qayyim, may Allah have mercy upon him, said:

First, they are declared as liars in their claim. Secondly, a notification that they are corrupt. Thirdly, attributed to the root of corruption with the confirmation of their true nature as corrupt individuals. Finally, declared as very ignorant, signifying their complete lack of self-awareness regarding their corrupt behaviour. [2]

[1] https://www.thenoblequran.com/q/#/verse/2/11 https://www.thenoblequran.com/q/#/verse/2/12

[2] Bada’i at-Tafseer 1/97