In a recent weeks I received quite a few downvotes, unfortunately nearly all of them are gifted to my questions without even a single negative comment (If it was for answers I feeling that downvoter at least really thinks my answer is bad to spend one point and open a discovery option for me). I can guess who are possible downvoters. e.g One of them is the one that I discussed with him a long time ago about the meaning of "natural problem" and after that discussion and considering that moderator supported me he started to downvote me (well I received some downvotes right after the question closed and I do not think it was by another one, and it was in another site but same user here). I don't know how to deal with these downvoters, specially if they downvote with fake accounts. Shall I downvote those people randomly or there is a logical way and e.g moderators can support in this situation. I do not think randomly in few weeks downvoters understand that almost all of my questions are bad (I asked not many questions, but the newest one is more than two year old!), but if they are really bad I like to have your help (particularly downvoters) to improve them.
P.S1: Before the recent weeks, in this site I had less than 5 downvotes and most of them were just for one question which was an edge question at that time (3-4 years ago), but then very randomly! those downvoters discovered that almost all of my contribution (as a questioner) was bad.
P.S2: I did write a personal message to one of such downvoters but the downvoter didn't respond to me so I also downvoted some of his questions and he downvote back and one day I didn't respond to his downvotes, it was really childish downvoting without any strong logic.
P.S3: (Un)forunately I'm almost quite logical, I simply accept my faults but on the other hand I do not accept anyone else's fault, well I do think everyone is responsible for his mistakes. That means I'm neither modest nor arrogant. So if you think you are doing something logical, then answer this post (everyone who thinks I'm in a wrong track), otherwise downvote me or suppose you never seen this.
P.S4: By having a good reputation or bad reputation at CSTheory.SE no one gets good or bad TCS job, so I really cannot understand meaning of downvotes without any single comment except that maybe someone say someone hates me and as I'm not a person who hates anyone so I cannot understand even this, your non-reasonable downvote or upvote just makes the site even worse.