It’s definitely possible to change the MAC.
But these tools are more commonly used for things that are legally questionable.
If the network forces you to register in any way or has some other way of tracking individual users, there is no privacy benefit.
I’m not sure if there’s any way of mimicking the Apple and Google MAC randomization systems where a given Wifi network will receive the same MAC address by default.
The default setups on Android/iOS also protect users legally to some extent. If there happens to be an obscure law against spoofing you’re actively installing and going out of your way to run something that does exactly that. Taking an action is usually viewed differently under law than simply using a default.
Changing the TTL seems to be distro specific. Either that or it’s defined at multiple points. So the distro forum is probably going to be a better bet.