Generals Questions about HTTPS scanning

Hello folks, hope you are all healthy!

I am quiet new to Sophos Firewalls, just bought a XG86 for the home. Works all fine so far.

I am interested in the HTTPS Inspection function and would like to enable that, of course.

But as far I understand, every Device/Browser needs to adopt the self signed Certificate to work with it.

So no problem, I can do that für MacOS, Win, Android, etc., but what do we do with devices, where I can not import certificates?

I mean all the IoT Stuff, SkyQ Receiver, Samsung TV and so on, I think you know what I mean.

Is there a way to exclude such devices?  And of course without loosing the comfort of Airplay, YouTube Streaming....

I know, this is not a business infrastructure Sophos is made for ...

Thanks for every hint you can give me and a happy 2021

Chris