as i explained to you ROKU is not smart TV. it is trash TV. watch any expert shootout of TVs - only Sony and Samsung TVs ever win them and neither use ROKU. only Cheap Chinese Walmart brand TVs use Roku.
also with Samsung mobile devices you can use a USB-C to HDMI adapter and run a desktop mode on a TV, even if your TV is 100% dumb. make sure your adapter also includes a USB port to plug power in so the phone battery doesn't die. mine is made by "vava" and also has headphone jack and other things.
i told you i own a Roku but never use it because it's a joke. i don't even know where it is.