You're not doing bad. The average person betting sports can't sustain a 50 percent winning percentage over time. And anything above that is unrealistic to someone not doing it as their profession, even then it's not as common as you think. Not sure where you are from, or what you're laying on these bets, but in the us if you're a professional gambler as a profession, right now you would have brought in 6 units, and lost 5.5 units roughly. That 5.5 lost is tax write off. You can write it all off up to the point of the total brought back in. So say you made 50k in wins over a year, and 40k in losses, for a net of 10k, the 40k is deductible. If you won 40k from wins, and lost 50k from the losses, only up to the 40k you made would be deductible in the losses.
If you're doing it just for fun, you're right about at the average for breaking even, or having a little bit at the end of the year, so just have fun with it.
This has been a painful year at the betting kiosk! I'm hoping against hope, that the Eagles can cover the 4.5 at GB. Don't think it'll happen, but there's always a punchers chance.