set sw=2 fails. I’m unsure if you mean:
.vimrc ->
set expandtab
set tabstop=2
set sw=2

VIM – Vi IMproved 8.1 (2018 May 18, compiled Apr 02 2025 16:39:51) needs this
.vimrc ->
set expandtab
set tabstop=2
set shiftwidth=2