~snip~
I never heard any story where a person is aggressively putting money into gambling and in the end winning any good amount from it

We will always find gamblers losing from these conditions. Many people will do the same as you are doing right now: either take a break from gambling (which is a good decision, in my opinion) or continue to put more money in, hoping for a win (this may be termed revenge gambling) and hoping to recover the losses. This way one will lose money than winning and this should not be done.
When you return to gambling, ensure that you do not risk more in each game so that the loss does not make you feel like you have lost a significant portion of your money (portfolio).
I was actually trying to develop a strategy at the same time testing it but it was quite unfortunate for me to end up in a big lose. I will have to express this again that gambling is not fun when you are losing money from betting. Casinos are the ones that are making the most profit and due to our frequent activities on casinos, staking and betting to get free money from the casino with the little we have, it is not always guaranteed that we are going to be profitable, and instead the casino will be the one benefiting from us.
My recent experience was unfortunate but I don't think it's strange to me because I expected to either lose or win which made me not to bother much about my lose.