I understand soya milk , you may be vegan or have a dairy or lactose intolerance. There are lots of coffees you drink for the taste and there ar usually caffeine free versions of said coffees . Thry Whittards or Pumphreys and you will find them.
The same with lager, wine and beer , there are lots that actually do tasete good and are alcohol free.
The thing is if you ask for an Americano , it should be black and strong and you dont add milk.