The speakers came with these cables. For whatever reason wont play any sound from my speakers when i connect them red white to red white with these cables. maybe its the wrong type of cable cuz its the wrong colors?
Na, colours doesn't matter. They're coloured for simplicity so you know what goes where instead of trying to figure out a whole bunch of cables if were all the same colour. You probably just need to enable external speakers in the TV's audio settings.
Regarding surround, with analog PC speakers it's impossible because a PC has all the designated connections (Green, black and yellow) to make 5.1 work. TV's don't have this nowadays. It's only Optical or Hdmi.
If you want surround from your TV then thats when an Audio Visual Receiver (AVR) specialises in. Doesn't need to be pricey either, can get quite an 'ok' good setup for 300$ or so with speakers that would be same or bit better then those Logitech speakers.
Regarding 5.1 content from TV, since Optical is bandwidth limited (2.1 usually lossless audio, untouched) the content from the source needs to be already encoded or compressed. Netflix has some shows in 5.1 but a lot are not, same for other streaming services. Content that is 5.1, what they do is they compress at their end in a format like Dolby or Dts capable of transmitting through an Optical cable (Optical cable doesn't have the bandwidth like Hdmi does) and then that audio is passed from the TV to the AVR where the format is then decoded (unzipped if you will) and you get 5.1.
Most AVRs nowadays have Hdmi and Hdmi ARC (Audio return channel over Hdmi) which ARC allows Dts HD and Dolby HD played directly to the AVR from the TV if streaming services allow it, not sure they do yet. It's also handy if you run out of Hdmi ports on the AVR and want to use the TV's Hdmi ports that audio wont be limited.
If you want surround, need an AVR. With PC speakers best you can do is stereo.