so if you want to hold a large amount of Bitcoins, you can choose Electrum. Because big whale holders use electrum wallet as software wallet.
I don't know how you know the wallet that bitcoin whales use, or if you know that electrum wallet is an online wallet and is not the best choice for keeping a large amount of your bitcoins. If you want to use electrum to store a large amount of your assets, you have to use electrum offline, and not everyone, particularly newbies, can do that.