.vimrc

" size of a hard tabstop
set tabstop=4

" always uses spaces instead of tab characters
set expandtab

" size of an "indent"
set shiftwidth=4

set ts=4 sw=4  et
5>>  Indent 5 lines
######################
set et sts=4 sw=2 nu ic autoindent cursorline
syntax on
set ruler
#####################
set et ts=4 sts=4 autoindent cursorline cursorcolumn ruler
set paste "temporarily disable auto indent
set ignorecase || set ic "case insensitive search"
#####################
:h autoindent
:h paste
#####################
:set <<-- options with non-default vaules
:set all <<-- all options including default
:ls <<-- buffer
:history <<-- your commands

autoindent = ai
#####################
autocmd FileType yaml setlocal ts=2 sts=2 sw=2 expandtab

https://www.krenger.ch/blog/vim-settings-for-yaml-files/