With having four numbers on the end, your domain is subject to there being many similar alternatives, like casino8383, casino2828.com, casino2288.com...and so on
While there being similar domains doesn't always make them low value, it's rare, and usually does bring the price right down because of the available alternatives.
casino2, casino9, these are (I'm guessing) probs worth 3 or low 4 figures, maybe. Add another number (casino12) and you're likely defo down to 3 figures.
Add 3 more numbers like yours and I think you'll just struggle to sell them.
Casino8 and 88, and 888 etc will be worth a bit more because "8" but also they're all the same, ie casino777 would also likely be worth a bit. But your numbers don't really have enough value or uniqueness to them.
imo - good luck though
