Question Do I need a HDMI Splitter or Switch?

[alibaba9676]

Trying to hook up my ROKU Streaming Stick 4K to my new LG TV (OLED 65C1AUB). All my HDMI ports are in use but I do have USB "A" ports. What I'm hoping to do is using the HDMI port with an adapter that allows 2 HDMI "IN" with 1 HDMI "OUT" connecting to the TV. Alternatively can I plug the ROKU unit into an adapter that will let me connect it to a USB port?

 

[helpstar]

you will need a switch
a splitter would be for one HDMI out to two HDMI in

Do you even need Roku with the new TV?