I would not.
Interested in Language
Would you say, 'On the weekend, I did soft things' to mean that you did informal and entertaining things?
It doesn't work in BrE either.
You could say you had a "laid back" weekend.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.
Or that you "took it easy."
Or you had "a chilled weekend".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.