Play minecraft together with same acc?

I apologize in advance for the complicated question, because I have Minecraft bedrock on Windows 10, Android and Nintendo Switch. I have all paid separately but they all run on the same acc, since I have paid for all of them separately, they are different versions, it should be possible to have all of them play together but I have them on one account and that doesn't work there a little help.

As long as each account has its own name, that should work so you need several xboxlive accounts, I mean the payment is per device or Google account, so just create several Xbox Live accounts that are free as far as I can remember. Could i help you