Chasing $50 with 0.00012 btc is not atractive at all, you should offer a bigger prize if you really want to get users on the raffle, and the right way to offer bigger prizes is by getting more users involved, in the end the prize comes from the users tickets, so, i don’t see it as a big deal.
The only problem that i see here is your bad reputation on the forum, you should clean that negative trust.
For sure, the priority of OP should be to clean his reputation and get rid of that negative feedback if he wants people to check his service with no fear of getting scammed or defrauded.
Also, managing a raffle can be tricky if one does not offer a juicy price for the people to get interested in from the beginning, the point of this is to offer something attractive enough so there would be enough volume of people willing to buy tickets, beyond the value of the money pot for the winner, otherwise the raffle would be a loss of money and time to the organizer.
There are already options within popular and liquid casinos which could give us the chance to win over 50$ without having to way for the raffle to get full of willing participants/ ticket holders.