Overzelous lamba usage

Was looking through a video on programming languages and realized I am also overusing lambdas sometimes when they are obsolutely not required. (Why you want to differentiate? -> because that’s the building block for writing elegant and clean scripts)

example of my own codes (From certain problems)

foldl (\x acc -> x + acc) acc alist
--while this should be definitely written as
foldl (+) acc alist
--and moreover if you are just using some standard list then better to use
sum alist