After a quick review of the downvotes cast against your posts, I should let you know that you (nor anyone else suffering the same rate of downvotes) do not need any protection.
I saw eight recent downvotes when I looked over the span of a month, two of which were on separate answers you gave to a single question, and two or three of which were on posts where you didn't have a question, you were just "sharing" a question for others to solve. I cannot spend time actually evaluating the quality of the answers fully, but I don't see anything particularly bad happening to you.
On this point about question sharing, our forum is not really meant for posing questions you don't have a question about (i.e. sharing them 'for the fun of solving them'.)* You could try puzzling.se for that. So it's understandable why downvotes could have been cast for that reason.
Anyhow, seeing as the scope of the downvoting against you is so tiny and probably half or more of the cases were downvotes cast 'in good faith' such as it is, you really should not be lodging complaints on meta about something like this. The downvoting activity I observed at the time of writing this does not rise above the level of normal background noise of downvotes.
Coordinated and targeted downvoting is already managed by software and moderators, and does a reasonable job of it. In cases like that, targets really are suffering a lot of reputation loss, and it is easy to reverse.
Just keep paying attention to the feedback you get from other community members and skim the FAQs again, and I'm sure in a week you'll probably not be seeing much in the way of downvotes anymore.
- Lots of such questions could conceivably be made into real questions, though, if there is some sensible request for an alternative solution that you are not aware of.