Married with kids, I don’t even know where to start with sleep tracking. I had an app that measured movement and noise, but it could be my spouse. I think a watch would work, but I don’t want to wear a watch to sleep
There's a youtuber who compares all wearables for accuracy with actual sleep measuring equipment and Fitbit charge 5 is (surprisngly) the most accurate. Here's a link to his graph of all devices charted on accuracy: https://youtu.be/6oNGpQZakxU?t=237
tl;dr - My Charge's data was questionable at times and completely inaccurate compared to a medical grade device. In the end, all the data tracking just gave me anxiety.
For me, these devices are good to spot trends over time, (eg "how has my resting heartrate improved after 4 weeks of being more physically active?") rather than comparing my data to someone else's.