As a first example, your idea as to what happened to the Witcher series ?!! You clearly live in another reality to mine.
So what you're denying he left the show because of scheduling conflicts or similar? You've got what, some kind of conspiracy theory instead? The last one of those I heard was debunked by literally everyone involved in the Witcher, and actually initially started as a hit-lie to attack Henry Cavill.
The sequence of events was:
1) Obscure self-regarding Twitter jerk made up that Henry Cavill was a mean ol' "anti-woke" bigot and that he was being mean to the female staff at The Witcher and demanding unreasonable changes. This started in S2 of the Witcher, but people had been moaning about Cavill's casting even earlier (seemingly because he was at the time was in his late-mid 30s dating a young 20-something, which age gap discourse Twitter found unacceptable even though I think most people would say it was a bit sad/loserly but not otherwise a problem).
2) Equally obscure alt-right grifters who thought "anti-woke" and mean to women was a good thing decided to amplify this and act like it was true.
2a) When Cavill left, these grifters, without any evidence, claimed that it wasn't scheduling issues like both Cavill and the Witcher people said, but actually they wouldn't change the show to be "correct" so he left. Even though he'd somehow endured multiple three seasons of fairly large changes from the books (at least some of which he'd apparently suggested!).
3) Eventually this got to YouTubers who turned it into a fake scandal, and from them to the niche press (and then months later to non-niche press), who tried to find out if it was true, and literally everyone involved denied it was true. Women on the show, including the showrunner, much later came out to say Cavill was actually really cool to work with.
4) It became clear Henry Cavill believed he'd been cast as Superman again, based on a conversation Cavill's manager (not his agent) had had with Dwayne Johnson, who is her ex-husband, and who she still manages. This was apparently "a done deal".
5) A few months later, James Gunn got put in charge of the DCU, and all plans were cancelled, including bringing back the Snyder-era Superman. Henry Cavill fired his manager shortly before this became public, which seems very indicative that he believed she had caused him problems.
I feel like I've had this conversation before here. I know it's attractive to believe conspiracy theories, but there's no evidence to support them here, and a ton of evidence otherwise, so yeah I can safely say I'm living in actual-reality here.
(EDIT: Edited points 1-2-2a for clarity)