Dell Support site has both Realtek driver and WavesMaax package for your model laptop for Win11. Select Windows 11 as OS and check "Audio" in Category. Install the Realtek driver first, followed by WavesMaax. If you have trouble running WavesMaax, refer to my earlier post and install in Windows 10 Compatibility Mode.
I have been using this without issue in Windows 10. My laptop, however is Windows 11, When I plug in my earphones, I do not get a pop-up to notify me to select. The setting is selected. I decided to update the drivers, so when I went to the Dell site and entered my Service Tag, I get the following message:- This driver is not compatible This driver is not applicable for  with Windows 11. Choose another product to re-enter your product details for this driver or visit the Product Support page to view all drivers for a different product.
Issue with Maxx Audio Pro With Windows 11