Casual PC speakers for music

Those Yamahas get decent reviews.

Also, you might try Audioengine A2+ or A5+. Those are simply phenomenal.

Btw - ignore the snarkiness and enjoy the music.

I listen to Audioengine A2+ speakers at work all day through the internal DAC.  They're pretty good for small computer speakers.  The angled stands are a must if you can't have a proper taller stand.  I just added them they make a big difference.

these Audioengine are over my budget unfortunately. But thanks for your suggestion! So in general speakers must stand higher than the desk? Or even have to have space behind them? 

The speakers should be at ear level; you can put a few shims or something like those under the front of each speaker so they tilt up at your ears.

Room behind is a bit important important; you don't want them right against the wall. give them as much space as you can while still keeping them parallel with your monitor.

Try Ebay for the A2+.  Good details abound.

Check here often:
https://audioengineusa.com/refurbished/