How do i connect roku remote to tv properly?

while you're sorting it out, the free roku app on your phone works as a remote as long as it's on the same wifi. saves you hunting for buttons on the tv itself.

Depends which remote you've got. The basic one with no voice button is infrared, so there's nothing to pair, it just needs fresh batteries and a clear line to the box. The voice / enhanced ones pair over wifi-direct. Pop the battery cover off, hold the small pairing button until the light starts flashing, and give it 30 seconds or so with the Roku on screen. If you already have a working remote you can also go Settings > Remotes & devices > Pair new device. Want it to do TV power and volume too? That's a separate setup in the same remotes menu, it walks you through a few test sounds.