Where can I place this bet? Don’t say Stake because they already banned me.
Why did they ban you ? Any reasons
Why did anyone think the OP really had $1 million? It's just a dirty tactic that leads to someone contacting him on PM and asking about that event - and then of course he'll try to sell it. As we can see, everything ends up with simple insults, no money, no bets 
I also believe the same. Think for a moment that a person want to place a bet of millions of dollars but didn't know that place/site where he can get this bet placed. Strange isn't? A person with this portfolio must have millionaire gambling friends and he can get information from them. Indeed, it does seem unusual for someone with such a large gambling portfolio to be unaware of where to place a significant bet. High-stakes gamblers often have well established networks and personal/official connections. I think this is a cheap tactic to gain attention for whatever evil reason, we never know.
1 000 000$ just bet in the casino? it's a crazy amount for me. I can't help but ask, Are you really rich, Op? Is what you say true? It seems as unbelievable as what you are saying. I'm sorry, Op; I can't help but doubt it. Although that's your story, only you can know if what you're saying is true or not.
Another reason why I doubt what you say is that you said you were at Stakescom. Why are you banned from this casino? It is one of the most reputable casinos in the crypto space and has been in this field for a long time.
Who knows, there are several reasons someone could be temporary or permanently banned from a casino , being that casino as reliable as stake or not, actually, I have seen people being temporary banned from casinos just because they decided to insult and be mean towards the personell of costumer support. I don't know OP and I have never had any connect with him but I'm my opinion it would not be crazy for a crypto millionaire to show up here and ask how to bet as a whale.
In any case, even If I had such quantity of money, I would not think gambling/betting all of it at the same time to be a good idea,.I would decide the money in several wagers of 10k or 20k dollars and try to profit off football matches in the next world cup.instead going all in with such a bit mountain of money... But I digress, in the end, each one of us decides what to do with the money one has on the pocket.
Just my two satoshis.