You can literally use a paperclip. Just stick it into the coax hole. This is not a joke, just do it. There is no trick. Just uncurl it then stick it in. Seriously go try it.
Edit: This wasn't meant to be condescending by the way, I was just sharing a cool fact I learned. I've tried it myself.
It's fun watching all the zoomers make discoveries on old school shit that we have known for decades. It was a happy moment when I heard my kid upstairs had found out about the "TWANG" sound when you flick those springy doorstop things near the floor.
Don't hate on this guy, he's keeping the traditions alive after us old folks. He'll maybe I can empart in the stupid/genius shit we used to have to do before the internet existed.