No Logitech speaker is good enough for playing anything but YouTube videos and the like.
Decent new speakers start at about $200 per cabinet ($400 a pair).
Look for JBL, Infinity, Boston Acoustics, Advent, Mission, Paradigm, Polk, and PSB.
Used ones can sometimes be had for $25 to $100 a pair depending on your luck.
You will need an amplifier to drive the speakers.
A stereo receiver is the most convenient option for that.
New ones start at about $130 (Sherwood is the best of the budget brands).
Used ones can be found for $15 and up.
Best bets for used receivers are Harman/Kardon, Pioneer, Onkyo,
Denon, NAD, Kenwood, Sherwood, and pre-1980 Sansui.