Can’t get live tv

Hi sorry if I sound an idiot but just installed kodi on my pc and it’s brilliant how were I cannot find a good addon for live tv be it BBC channels or sky channels. Just installed supremacy as a few reviews were good but it don’t matter what channel I click on nothing happens. Have also tried installing a pvr with the guidance notes from seo Michael again a whole list of channels to choose from but nothing happens when I click on them

Am I missing something?

Thank you