buncha folks are running linux on macbooks, but their experience will be of little use to you as T2 macbooks are hella complicated in that regard.
the wifi going away, unless it’s the published fix on t2linux (restart NetworkManager on resume via systemd), is something you need to describe in more detail.
never had/heard issues wrt trackpad, I’d have to look into that.
not waking after sleep promptly is due to softlocks on the CPU; it will wake eventually. if you’re not happy with that, there’s a short script that shuts all cores off prior to standby and reactivates them on wake; that puts the wake time to a coupla seconds.




I ain’t got none of those and this is/was the only way you can open a gmail account without a phone number; as posited in OP, this is to be used only to register to stuff, not use it as a comms medium.