The site has become stricter about unsupported answers, and your answers are largely unsupported.
Please note all this is not to criticize you, but to explain what's going on so you can adapt to it.
Reviewing your recent deleted and undeleted answers, the vast majority are simply stated as "Do this/this is the answer-fact." Use name cards. Leave your GM. Eliminate Wish from access by mortals. Sell six bullets for a copper. Use a session 0. Your AC is 18.
But in very few of these cases (deleted or undeleted, upvoted or downvoted) are the answers backed up per What are the citation expectations of answers on RPG Stack Exchange?.
In fact, even worse, in some cases it's clear you definitely don't have that experience, like the session 0 recommendation when someone asked you "have you done this" you replied "no, and I can't even put myself in the shoes of an inexperienced GM since it's been 20 years since I was one." Then what grounds do you have to recommend it? Hearsay?
This is all a warning sign of Bad Subjective answers - ones you thought up but are not grounded in either the rules (flatfooted in 5e, nonexistent rogue feats in 5e) or in experience. We don't like answers that "sound good" but may not actually be a good idea; that runs the risk of actually hurting the person asking questions.
The fix here is to only answer questions you have experience with (game system wise or situation wise), and explain how it's worked for you. This doesn't have to be "pages and pages" but should have another couple sentences.
Here's an example, your most highly upvoted recent answer, How can I get people to remember my character's gender?. It probably should have downvotes, and it probably doesn't because enough people have seen this/it's worked for them that they are just mentally editing in the experience rather than looking for it in the answer. I mean, it's a good technique, it's one I have used and agree with - but the answer itself doesn't help someone know whether this is just a crazy idea that's in reality a terrible practice that hasn't worked for people.
If you haven't used name cards, then this answer should be deleted. No one should be "making up" answers on this site, we don't do brainstorming/idea generation here, that's what forums are for.
If you have, it doesn't take much to add a couple sentences of times you've done this or seen it done and how it helped. "I went to a convention recently and everyone made index card name tents with name, profession, and a gender symbol and it helped everyone keep it straight even coming into a new set of PCs cold." <- would be my personal example, in this case at Chupacabracon playing Call of Cthulhu.
I get how it's a little confusing, because some of your unsupported answers are getting upvotes and so there's not a clear correlation between your upvoted/remaining versus downvoted/deleted answers in terms of backing up. But all answers need some kind of backup besides "I said so."