Everyone has suggested you with a sports betting site, all, you refuse, of course you have your own reasons for that, $15k, quite a big chance of winning, especially football betting.
So, consider the one suggested by: @ryzaadit.
It seems that you have not refused and gave reasons.
Duelbits or Roobet?
If you reject all the suggestions here, that's all, maybe you can try a sports betting site outside, maybe a lot, wait there's one more that hasn't been suggested.
BK8.