Razer actually makes some small soundbars specifically for this use case.
You probably won't get much in the way of surround effects. Most soundbars intended for a living room are going to be trying to bounce sound off of the walls and ceiling toward a space much further back than you're probably sitting at your computer.
However, the actual speakers inside that soundbar are probably a substantial upgrade compared to whatever garbage Samsung squeezed into that monitor. Were I trying to buy a soundbar specifically for this use case, I'd basically ignore Atmos and surround capability, stick to small and relatively inexpensive and make sure it has an audio input my PC or monitor supports. A lot of them are built around eARC which most monitors can't do as far as I've ever noticed, but if your PC supports TOSLINK, that's fairly common too.
I just removed a very large Samsung soundbar from my living room in favor of real speakers. I had intended on moving the soundbar to the bedroom but I've been overruled so this thing:
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Will likely be living here once I get the monitor on its new mount:
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(And now I'm going to go clean my mousepad)