I have a few of these devices in my place as a part of my home automation. It’s been struggling the last year with not confusing the basics and not mixing up the beginning of a news podcast as my voice commands. It seems like the newest display I own has the most issues.
I generally just use it to control and schedule lights and devices with smart plugs. The odd time I try to set timers or reminders but I’ve never really been a big voice command person. I too struggle on the best way to get it to play my YouTube music likes list. I just cast from my phone instead.
One thing it mostly gets right is stopping whatever is playing.
With my Soundbar no longer being new enough to work with Google Assistant I’m not looking forward to when the rest of my smart lights, switches, and plugs join it as we go forward.