I looked at a few pages of your post history, and the first problem I detect is that about 35% of your posts are in Games and rounds, and as far as I know that board is not exactly part of the forum where you can expect merits. Furthermore, I notice that some, so to speak, somewhat good posts are buried in some mega-threads, and you can hardly expect anyone to find your post on page 9 of someone's thread - and that after all these answers you will write something meaningful and original.

I don't want to give you advice to be what you are not, in the sense that you force yourself to post in boards that don't suit you according to your knowledge - but I can tell you that it's completely wrong for you to hunt merits, and in fact merits should find you. My advice to you is to find a few members who have earned a lot of merits, to study their posts and try to find the best way to become a better poster - we all learned from someone and we were all beginners at one point.