Go to nbcolympics.com
It gives you the ability to watch live (and replays) of every single event. You have total control over which events you want to watch. Not at the mercy of network TV bouncing around to different stuff.
My family has been having a lot of fun. We are even watching on our big TV, but using the stream from the website rather than any of the NBC TV stations.
It requires a tv provider login to access the web content IME, unless I am missing something. We have a Peacock subscription and ended up subscribing to NBC SN through Hulu Live and the coverage is only marginally better, both live and on demand. The sports that my daughter really wanted to see (fencing) is basically not being aired.