Hey I'm looking to buying Bitcoin in amount of $5-10 M .
Seller must pass Satoshi text. If you got any advice or leads, it'll be appreciated.
Dude, the crypto/Bitcoin trading method is divided into several ways, Margin, Spot, futures, if you want to trade or want to buy Bitcoin in large amounts, of course you can do the Spot method which is more efficient and easier for you to do.
For example:
You buy Bitcoin in the amount of $5 million, when the price is $71k/Btc, of course you will get 70.4 Btc, so if you sell at $72k you will automatically pocket the Bitcoin profit value of $70.4k times the profit taken at $1000 and so on, just imagine the results you get.
If you do that, of course you can choose short-term trading, or keep track of Bitcoin's development in the market.
This method, in general, is certain that trading Bitcoin has risks, you also have to consider that, the price of Bitcoin can drop instantly in a matter of minutes, so before buying Bitcoin, consider it carefully, find out the current market situation, so that you avoid real losses.
What I said is a general trading method, you don't have to do it, the point is: all the decisions you want to take are up to you, your losses and profits are the responsibility of you.