FYI: the Motorola phones are Motorola in name only. They were bought out by Lenovo a few years ago and are all made in China. Samsung phones are made in Vietnam, which isn't that different. Although at $50, you get what you pay for, sadly.
The only Moto phone I had died shortly after I rooted (the Android version of Jailbreaking albeit with more features) it and it got really hot and died, and only flashes a tiny little white LED if you plug it into a charger. I think it was a Moto E or something, a $30 phone.
If the USB-C port is damaged or the adapter you're using isn't the right kind (yes, even today, USB-C is full of conflicting standards, including charging cables known to short out phones! I think if you don't use the 'approved' Nintendo charger or dock for a Nintendo Switch, just plugging it into a standard USB-C cable kills it) it might 'assume' that you're using headphones. It's all depending on pinouts. It doesn't take much to confuse it.
With my Android Auto issue, it either refuses to launch entirely (showing a black screen in the infotainment system) or it thinks there is no signal/data connection and won't stream music (unplugging it and replugging it in fixes it normally but it is annoying)
Other issues were it not charging when plugged in. I'd plug it in, it'd show '68%, charging, 2 hours until full' and go to bed, waking up to it being quite warm, and then showing '18%, use original charger, unknown time remaining'. That pretty much forces me to rely on wireless charging to work around it today.
If you were one of the unlucky owners of a Galaxy S9 back in the day, that phone's USB-C port always thought it was wet, so you couldn't charge it because it would claim there's moisture in the port, forcing the use of wireless charging as well.
I never had any of those above issues with Micro USB.