Re: That's what you get for trusting Google.
My folks just recently bought Linksys velop mesh wifi because it was recommended by "Which?"*. I was obviously tasked with setting it up and discovered that Linksys are very keen on you using their app. Sadly to use this you need to sign up and get a Linksys cloud account. Now I balked at this because Linksys don't have a very good reputation in this area. https://www.theregister.com/2020/04/15/linksys_wifi_password_reset_malware_app/
So I hunted around on the net and then spoke to their tech support live chat. I asked what you were supposed to do if you didn't have a smartphone or the wifi was going to be closed circuit. The live chat person was actually very helpful and explained how to set it up if you don't have a smartphone or object to a cloud account. It isn't obvious though and is akin to finding a shortcut on a video game.
* To be fair to "Which?" they recommended the system before that hack but after you needed a cloud account.