@silver9899 Does this happen in a new save as well? Please test for comparison's sake.
If the new save is affected, please go into Documents > Electronic Arts > The Sims 4 and remove options.ini, then test again. This will reset all your in-game options to the defaults, so if this doesn't help and you don't want to redo all your settings, just delete the new options.ini the game will have created and put the old one back.
The next thing to try would be a different sound output device that uses a different type of connection, for example built-in speakers vs. headphones connected via jack.
@silver9899 Please run a dxdiag and attach it to a post.
https://help.ea.com/en/help/pc/how-to-gather-dxdiag-information/
Thank you! this is attached. Hope it helps.
@silver9899 Your dxdiag lists a number of Windows errors, so let's start with running a couple of basic checks on your Windows system files.
Restart your computer, hit Windows key-i, select Update & Security, and click the box to check for updates. If any install, restart again afterwards.
Next, please manually update your sound drivers; the Realtek driver at least is somewhat out of date. Hit Windows key-X, select the Device Manager, open the Audio category, and for each entry, click on it and then click the black and green Update button in the menu. Repeat for the Sound category, and restart your computer when you're done.
