how to switch from Windows 11 to Windows 10?

[firehawk]

I went ahead and ordered a new system while Windows 10 Pro was still available as the O.S. But they sent it to me with Windows 11 Pro installed.
It won't let me roll back because it never had Windows 10. I hate 11. I do have a factory install USB for Windows 10 I paid extra for but I found out today it is for Windows 10 HOME.
Is there a way to get 10 pro onto this system? Maybe instsall 10 home from my USB and then enter a key for 10 Pro? Or is there a way to switch 11 Pro to 10 Pro?

 

[hojomo]

I went ahead and ordered a new system while Windows 10 Pro was still available as the O.S. But they sent it to me with Windows 11 Pro installed.
It won't let me roll back because it never had Windows 10. I hate 11. I do have a factory install USB for Windows 10 I paid extra for but I found out today it is for Windows 10 HOME.
Is there a way to get 10 pro onto this system? Maybe instsall 10 home from my USB and then enter a key for 10 Pro? Or is there a way to switch 11 Pro to 10 Pro?

install home upgrade to pro. they won't let you go back afaik