@britechguy I don't get to pick these things...
Google has part of their mission statement to eliminate all endpoint software. They want the world to live in a browser. So if you use their tech, you accept that reality as part of the limitations of their design.
So if you're supporting people that need alternative access solutions, and those solutions are endpoint based you're in a place where you simply must choose to not use Google tech... OR you lose your mind.
Outlook.com is free... Office 365 for personal / family is not expensive... and use of the two with each other means desktop calendaring, contacts, and mail all rolled up into an Exchange fed always works solution that we've used for decades.
This isn't about home vs business, this is about home users choosing the wrong free tools to live their lives and then constantly whining about it. And then a small army of tech people that make their living giving out bad advice that leads to constant issues so they can be fed a steady stream of planned faults to feed themselves. When applied to a disadvantaged population, this process has all sorts of ethical concerns. For my part? I stick with what works, what always works, because a solution that works less well generates too many phone calls.
Get an outlook.com email, and hook it to Outlook mobile app for free and POOF, calendar is solved. Works on Apple and Android endpoints... works the first time, and every time. Modern auth potential built in... easy MFA options if you want them... it's all there. But muh GMAIL!!! Screw it... Gmail is a chore to work with in this context. Dump it!
Why is there no good way to sync Google Calendar into Outlook? Because GOOGLE DOESN'T WANT THERE TO BE! It's 2022 is anyone here silly enough to think this issue hasn't been solved? It has been... hundreds of times... and every time a solution gets too popular Google breaks it, because they do not want it!