One thing I've noticed about the Google Home assistant and that is that either many of the services or skills aren't very well tested or the platform itself has problems, as I've found a number of services with fairly obvious bugs that shouldn't have been allowed to get past testing, assuming that they even bother to test these things. In one service called "What fruit am I?" where you answer some personality oriented questions and it will tell you what kind of fruit best matches the answers you've given, it asks you whether you'd rather fly a plane or a kite, but won't accept either answer forcing you to abort the quiz. The Star Trek trivia game also has similar problems in that some questions won't accept the answer you give it eventually resulting in the game being aborted.
Alexa also had problems, but at least it would say something like, "I can't access that skill right now, please try again later."
I know that Google Assistant is newer than Alexa, but the Google Home has been out for a year now and since Google is a company who's bread and butter is writing web services, you'd think these services for their assistant would be better tested than they appear to be. At least for me most of these services are only a secondary reason for having the digital assistant in the first place, so if if I find a service that is buggy, I just don't use that service any more and give it a low rating in the Google Home app.
Even with the Echo and all of the skills that were available, I got bored with most of the games that were available to the point that the only two games I kept enabled were Question of the Day, which is available on the Google assistant, and Jeopardy, which isn't available on Google, but I don't really miss it, so that's not really a problem.
Mostly what I used the Echo and now the Google Home Max for is commercial free background music via streaming, information, and alarms and timers.
And now that Amazon has announced that they are yet again raising the price of Prime memberships, that just makes me more determined to stick with my decision to go with the Google Assistant over Alexa. Especially since about the only Prime benefit I was using was two day shipping, which isn't a necessity, and while you don't need Prime to use Alexa or most of its skills, without prime some skills, like Jeopardy, have only limited access, and you can't do voice ordering, and you have no access to music unless you link a Pandora or Spotify account to Alexa. And here Alexa only support Pandora's free account, to link Spotify you have to have a paid account.
At least with Google Home, free music accounts from both Pandora and Spotify are supported as well as free Google Play accounts.