IF you are getting flags from this account it is because this account tracks those accounts to see who is getting flagged out of a desire to see abused people protected.
Looking over your account I would suggest, original content, every time.
No ai.
Cite your sources.

Otherwise you would have to ask one of the other accounts.
I'd start with the one with the highest rep.

I am going to upvote your comment, it covers any future flags you might get.
You have not lost value because of encountering this account.

Freeborn already mentioned the possible reasons but you may need to ask the 1st account that triggered the downvote trail to confirm. This account of mine trails the downvotes given.

Sir, i have only one account. i don't copy any post.

you can check my account.