If your intentions are solely to learn how to play keyboard,
then, yes, you should get yourself a portable one. If keyboard
playing is something you continue to enjoy after a few months,
then you could easily move on up by buying one with more sound
possibilities. OTOH, if you start hating piano, you won’t be stuck
with a huge burden of a full-sized one. A “proper” piano is one
of those things that is nice to have when you are older and
settled in a nice home with space.
I have a neighbor who has a junk piano on his front porch -
painted mostly bright red - with the word “doorbell” in huge
letters across the front.
https://lakewood.advocatemag.com/201...ll-is-a-piano/