You should be able to get them from the link below.  They are the same for Win 10 and Win 11. On many systems, installing the Realtek version will also install the Waves MaxxAudio but since yours is separate, it may not an you may need to install that also, if you want it.\   Support for Inspiron 3593 | Drivers & Downloads | Dell US
  When I search for a solution for Dell Audio, I usually get the same as this - "Program Files --> Realtek --> HDA". But the problem is there is no Realtek in my Program Files? Please share a link if you can.
Inspiron 15 3593, Windows 11, Realtek audio missing