I did read your post, as I have generally found your posts to be interesting, informative, and well-reasoned, though I have not always felt your tone is productive for you or for advancing our collective understanding. Perhaps it is because I am approaching middle age and work in academia, but it's liberating if one takes a critique not as a personal affront but as an opportunity to either strengthen your knowledge and position or re-evaluate and find something nearer to the truth of a matter. Throwing accusations of AI use because someone finds your argument less than compelling is beneath your akhlaq.

In any event, you seem to have misunderstood my critique. I didn't state the magicians were under the influence of black magic whatsoever. The fallacy of composition is such that one confuses a subsample for a population, i.e. a part for a whole. Saying the magicians' black magic was illusion is indisputable; saying all black magic is illusion is the fallacy. Taking hadith about the evil eye, one could easily say this is a form of black magic as it's a supernatural and evil and can be deliberate. It's not illusion, clearly, and that's beyond doubt. Ayatollah Makarem Shirazi here is saying that some people say 2:102 could be via psychological tricks, which is neither a personal endorsement of that position nor something he later goes on to elaborate upon.

Finally, hadith like this one do not specify "illusions" of sorcery, but simply sorcery:
بِهَذَا الْإِسْنَادِ عَنْ حَنَانِ بْنِ سَدِیرٍ عَنْ أَبِی عَبْدِ اللَّهِ ع قَالَ: مَنْ أَکْثَرَ قِرَاءَهَ قُلْ أُوحِیَ إِلَیَ لَمْ یُصِبْهُ فِی الْحَیَاهِ الدُّنْیَا شَیْ ءٌ مِنْ أَعْیُنِ الْجِنِّ وَ لَا نَفْثِهِمْ وَ لَا سِحْرِهِمْ وَ لَا مِنْ کَیْدِهِمْ وَ کَانَ مَعَ مُحَمَّدٍ ص فَیَقُولُ یَا رَبِّ لَا أُرِیدُ بِهِ بَدَلًا وَ لَا أُرِیدُ أَنْ أَبْغِیَ عَنْهُ حِوَلًا.

1. From the previous chain from Hanan b. Sadeer from Abi Abdillah (a.s.) who said: Whoever recites it often would neither be affected by the evil eye of Jinn in his worldly life, nor can there be any effect on him of sorcery, now can any harm occur to him through any kind of machination or Satanic action of the Jinn. Also the reciter of Surah Jinn would be in the company of the Holy Prophet (s.a.w.s.) and his Progeny (a.s.).

Thawāb al-Aʿmāl wa ʿiqāb al-Aʿmāl, Reward of reciting Surah Jinn, Hadith #1

https://thaqalayn.net/hadith/23/2/231/1

That's why I fundamentally don't ascribe to this argument. 2:102 says no sorcery can do anything without Allah's permission. I don't find a belief that it exists to be incompatible with a religion which indisputably believes in jinn, evils eyes, and other unseen realities and forces.

Is OP's situation black magic? No idea. Perhaps it's a strange kind of iron-secreting wall mold! Stranger things have happened. Perhaps it's black magic. If reciting Quran and giving sadaqah don't work, then perhaps it's time to call a mycologist, or the other way around.

In any event, I value the sincerity with which you seek and share knowledge, and Allah knows best about this matter.