The broadcast freeTV electronic program guide (EPG) on my current TV is trash. It's clear they only cared about big corporate apps (that paid to get dedicated branded buttons on the remote).
Squint to see the tiny text (probably because it was designed & tested on a non-4K tv)
You have to visit the channels first for the EPG to populate for them.
There is no line to denote your current position in time on the chart. Instead you have to read the (tiny) time at the top right, then guesstimate its position on the chart, then look down.
My decade+ old Samsung plasma is so much better; but it wasn't a "smart" tv, so broadcast TV was its tea.
(Of course this still doesn't fix the fact the "apps" are buggy and slow. Already had the TV warrantied and parts replaced once because of some of them going black and white. I have no idea how such as weird problem could manifest OR how the solution was to exchange hardware components)
You're probably using the FreeTV/pbbtv guide. Turn that shit off.
You have to visit the channels first for the EPG to populate for them.
Unless your tv has dual tuners, which most don't because $, or use an internet connection to populate the TV guide, that's how digital TV guides work. Remember the analog TV guides? Yeah. You had to go and buy a paper...
Alternatively, you can visit any of dozens of online tv guide websites and get heaps more info with links to imdb etc for info and ratings. I don't even know why TV epgs are a thing...
Unless your tv has dual tuners, which most don’t because $, or use an internet connection to populate the TV guide, that’s how digital TV guides work.
Some TVs will sweep through the channels populating the EPG while the TV is 'off' or store EPG data it received earlier, so as long as it's been plugged in recently it'll have a reasonably up to date EPG data right away.