https://wccftech.com/how-to-downgrade-windows-11-rollback-to-windows-10/

Microsoft has started a months-long process of releasing Windows 11 to over a billion devices, but this doesn't mean Windows 10 won't be supported. The operating system isn't only set to receive a major feature update in the next few weeks, but it will continue to receive cumulative updates until at least 2025.

If you aren't thrilled about getting on board the Windows 11 train, you don't need to. However, if you'd like to give it a try and see how things work out, Microsoft is officially offering you 10 days to do that. Upgrade to Windows 11, experience it for 10 days, and then choose to roll back to Windows 10 if you don't like it without having to do data backups.