It’s okay; you’re free to (kinda) go back to the old menu style.
I purchased Start11 and used it for the past month.
Yes, Start11 Can Restore Old-School Start Menus
Start11 includes three older start menu styles.

Unsplash / Mockup Photos
The Windows 7 and Windows 10 styles provide a menu familiar to fans of each operating system.
The options go beyond replicating the old Start menu design.
Start11 offers alternative designs for the Windows 7 and Modern style, and each can be customized.

you might change font size and visual effects or add a custom background, among other options.
A Windows 11 menu style is available, too.
you’ve got the option to also customize the look to suit your preference.

Start button customization is the software’s second key feature.
This will allow you fully embrace an old-school look with a custom Windows 7 or Windows XP icon.
The menu’s Live Tile replicas have none of the features found in Windows 10.

They don’t update dynamically and can’t be moved or pinned.
Windows Search is another sore spot.
Unfortunately, start11 can’t revert this change.
Start With a Click
Start11 is more appealing than its alternatives despite its limitations.
For that, you’re able to thank the software’s ease of use and speed.
Your choice takes effect immediately.
I’ll be keeping Start11 installed on my Windows 11 machine.
That’s more than I can say for the vestigial Start menu Microsoft shipped with Windows 11.