Oh good, hope it helps you! HRV hasn't been hugely helpful for day-by-day analysis for me, but it's very good at identifying longer term trends, and even though it's unlikely to make you feel any better, being able to see the data mapped out can help to feel a bit more in control.
It's also useful because so many of the symptoms are simultaneously very persistent and very vague, so you end up second-guessing yourself, like, is this actually a real thing or am I just imagining it? Being able to see those longer term trends of HRV tanking and rising helps you contextualise subjective symptoms/experience in a more objective way. And if you've enjoyed Strava or whatever then you'll be familiar with the lure of personalised data over time, heh.