There are some big accounts on here who can also be trolls/bullies. That is the nature of Hive,but you get some good support too. Seeing as you posts make a fair bit anyway isn't it better to get on with putting out content of value rather than complaining about flags? I get flagged by some big accounts, but still earn.
Downvotes are as valid as upvotes in distributing rewards. Plenty of people would love to make more than a couple of dollars on a post and their content may be at least as good as yours.